kernel: backport of changes & helpers

This code is required for upcoming NVMEM changes.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

target/linux/generic/backport-5.10/732-v5.13-0003-of-base-Fix-some-formatting-issues-and-provide-missi.patch

@@ -0,0 +1,95 @@
+From 3637d49e11219512920aca8b8ccd0994be33fa8b Mon Sep 17 00:00:00 2001
+From: Lee Jones <lee.jones@linaro.org>
+Date: Thu, 18 Mar 2021 10:40:30 +0000
+Subject: [PATCH] of: base: Fix some formatting issues and provide missing
+ descriptions
+
+Fixes the following W=1 kernel build warning(s):
+
+ drivers/of/base.c:315: warning: Function parameter or member 'cpun' not described in '__of_find_n_match_cpu_property'
+ drivers/of/base.c:315: warning: Function parameter or member 'prop_name' not described in '__of_find_n_match_cpu_property'
+ drivers/of/base.c:315: warning: Function parameter or member 'cpu' not described in '__of_find_n_match_cpu_property'
+ drivers/of/base.c:315: warning: Function parameter or member 'thread' not described in '__of_find_n_match_cpu_property'
+ drivers/of/base.c:315: warning: expecting prototype for property holds the physical id of the(). Prototype was for __of_find_n_match_cpu_property() instead
+ drivers/of/base.c:1139: warning: Function parameter or member 'match' not described in 'of_find_matching_node_and_match'
+ drivers/of/base.c:1779: warning: Function parameter or member 'np' not described in '__of_add_property'
+ drivers/of/base.c:1779: warning: Function parameter or member 'prop' not described in '__of_add_property'
+ drivers/of/base.c:1800: warning: Function parameter or member 'np' not described in 'of_add_property'
+ drivers/of/base.c:1800: warning: Function parameter or member 'prop' not described in 'of_add_property'
+ drivers/of/base.c:1849: warning: Function parameter or member 'np' not described in 'of_remove_property'
+ drivers/of/base.c:1849: warning: Function parameter or member 'prop' not described in 'of_remove_property'
+ drivers/of/base.c:2137: warning: Function parameter or member 'dn' not described in 'of_console_check'
+ drivers/of/base.c:2137: warning: Function parameter or member 'name' not described in 'of_console_check'
+ drivers/of/base.c:2137: warning: Function parameter or member 'index' not described in 'of_console_check'
+
+Cc: Rob Herring <robh+dt@kernel.org>
+Cc: Frank Rowand <frowand.list@gmail.com>
+Cc: "David S. Miller" <davem@davemloft.net>
+Cc: devicetree@vger.kernel.org
+Signed-off-by: Lee Jones <lee.jones@linaro.org>
+Signed-off-by: Rob Herring <robh@kernel.org>
+Link: https://lore.kernel.org/r/20210318104036.3175910-5-lee.jones@linaro.org
+---
+ drivers/of/base.c | 16 +++++++++++-----
+ 1 file changed, 11 insertions(+), 5 deletions(-)
+
+--- a/drivers/of/base.c
++++ b/drivers/of/base.c
+@@ -305,7 +305,7 @@ bool __weak arch_match_cpu_phys_id(int c
+ 	return (u32)phys_id == cpu;
+ }
+
+-/**
++/*
+  * Checks if the given "prop_name" property holds the physical id of the
+  * core/thread corresponding to the logical cpu 'cpu'. If 'thread' is not
+  * NULL, local thread number within the core is returned in it.
+@@ -1128,7 +1128,7 @@ EXPORT_SYMBOL(of_match_node);
+  *			will; typically, you pass what the previous call
+  *			returned. of_node_put() will be called on it
+  *	@matches:	array of of device match structures to search in
+- *	@match		Updated to point at the matches entry which matched
++ *	@match:		Updated to point at the matches entry which matched
+  *
+  *	Returns a node pointer with refcount incremented, use
+  *	of_node_put() on it when done.
+@@ -1779,6 +1779,8 @@ EXPORT_SYMBOL(of_count_phandle_with_args
+
+ /**
+  * __of_add_property - Add a property to a node without lock operations
++ * @np:		Caller's Device Node
++ * @prob:	Property to add
+  */
+ int __of_add_property(struct device_node *np, struct property *prop)
+ {
+@@ -1800,6 +1802,8 @@ int __of_add_property(struct device_node
+
+ /**
+  * of_add_property - Add a property to a node
++ * @np:		Caller's Device Node
++ * @prob:	Property to add
+  */
+ int of_add_property(struct device_node *np, struct property *prop)
+ {
+@@ -1844,6 +1848,8 @@ int __of_remove_property(struct device_n
+
+ /**
+  * of_remove_property - Remove a property from a node.
++ * @np:		Caller's Device Node
++ * @prob:	Property to remove
+  *
+  * Note that we don't actually remove it, since we have given out
+  * who-knows-how-many pointers to the data using get-property.
+@@ -2130,9 +2136,9 @@ EXPORT_SYMBOL_GPL(of_alias_get_highest_i
+
+ /**
+  * of_console_check() - Test and setup console for DT setup
+- * @dn - Pointer to device node
+- * @name - Name to use for preferred console without index. ex. "ttyS"
+- * @index - Index to use for preferred console.
++ * @dn: Pointer to device node
++ * @name: Name to use for preferred console without index. ex. "ttyS"
++ * @index: Index to use for preferred console.
+  *
+  * Check if the given device node matches the stdout-path property in the
+  * /chosen node. If it does then register it as the preferred console and return