uboot-mediatek: add spi-nand build for bananapi bpi-r64

Some of bpi-r64 boards have serial NAND attached to SPI bus.
Build U-Boot for booting from SPI-NAND.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Oskari Lemmela <oskari@lemmela.net>

package/boot/uboot-mediatek/Makefile

@@ -54,6 +54,17 @@ define U-Boot/mt7622_bananapi_bpi-r64-sdmmc
   DEPENDS:=+trusted-firmware-a-mt7622-sdmmc-2ddr
 endef
 
+define U-Boot/mt7622_bananapi_bpi-r64-snand
+  NAME:=BananaPi R64 (SNAND)
+  UBOOT_CONFIG:=mt7622_bananapi_bpi-r64-snand
+  BUILD_DEVICES:=bananapi_bpi-r64
+  BUILD_SUBTARGET:=mt7622
+  UBOOT_IMAGE:=u-boot.fip
+  BL2_BOOTDEV:=snand
+  BL2_DDRBLOB:=2
+  DEPENDS:=+trusted-firmware-a-mt7622-snand-2ddr
+endef
+
 define U-Boot/mt7622_ubnt_unifi-6-lr
   NAME:=Ubiquiti UniFi 6 LR
   UBOOT_CONFIG:=mt7622_ubnt_unifi-6-lr
@@ -90,6 +101,7 @@ endef
 UBOOT_TARGETS := \
 	mt7622_bananapi_bpi-r64-emmc \
 	mt7622_bananapi_bpi-r64-sdmmc \
+	mt7622_bananapi_bpi-r64-snand \
 	mt7622_linksys_e8450 \
 	mt7622_rfb1 \
 	mt7622_ubnt_unifi-6-lr \

package/boot/uboot-mediatek/patches/403-add-bananapi_bpi-r64-snand.patch

@@ -0,0 +1,33 @@
+--- a/arch/arm/dts/mt7622-bananapi-bpi-r64.dts
++++ b/arch/arm/dts/mt7622-bananapi-bpi-r64.dts
+@@ -19,7 +19,7 @@
+ 	};
+
+ 	aliases {
+-		spi0 = &snfi;
++		spi0 = &snand;
+ 		ethernet0 = ð
+ 	};
+
+@@ -205,17 +205,11 @@
+ 	};
+ };
+
+-&snfi {
+-	pinctrl-names = "default", "snfi";
+-	pinctrl-0 = <&snor_pins>;
+-	pinctrl-1 = <&snfi_pins>;
++&snand {
++	pinctrl-names = "default";
++	pinctrl-0 = <&snfi_pins>;
+ 	status = "okay";
+-
+-	spi-flash@0{
+-		compatible = "jedec,spi-nor";
+-		reg = <0>;
+-		u-boot,dm-pre-reloc;
+-	};
++	quad-spi;
+ };
+
+ &uart0 {