drivers: phy: add adin2111

Adds PHY driver. Works via MDIO API and
exposed ADIN2111 MDIO Clause 45
functions.

Link status detection is triggered by
ADIN2111 driver within offloaded IRQ
handler.

Supports:
  - LED0, LED1 enable/disable
  - Fatal HW error detection
  - AN 2.4V tx mode enable/disable

The initialization order is important.
PHY 2 must be initialized after PHY1.
Therefore, it shall be defined after the 1st one
in the devicetree.

Signed-off-by: Georgij Cernysiov <geo.cgv@gmail.com>

CODEOWNERS

@@ -286,6 +286,7 @@
 /drivers/ethernet/*smsc91x*               @sgrrzhf
 /drivers/ethernet/*adin2111*              @GeorgeCGV
 /drivers/ethernet/phy/                    @rlubos @tbursztyka @arvinf
+/drivers/ethernet/phy/*adin2111*          @GeorgeCGV
 /drivers/mdio/                            @rlubos @tbursztyka @arvinf
 /drivers/mdio/*adin2111*                  @GeorgeCGV
 /drivers/flash/                           @nashif @de-nordic

drivers/ethernet/phy/CMakeLists.txt

@@ -1,3 +1,4 @@
 # SPDX-License-Identifier: Apache-2.0
 
-zephyr_library_sources_ifdef(CONFIG_PHY_GENERIC_MII	 phy_mii.c)
+zephyr_library_sources_ifdef(CONFIG_PHY_GENERIC_MII	phy_mii.c)
+zephyr_library_sources_ifdef(CONFIG_PHY_ADIN2111	phy_adin2111.c)

drivers/ethernet/phy/Kconfig

@@ -23,12 +23,21 @@ config PHY_INIT_PRIORITY
 
 config PHY_GENERIC_MII
 	bool "Generic MII PHY Driver"
-	default y
+	default y if !ETH_ADIN2111
 	depends on MDIO
 	help
 	  This is a generic MII PHY interface that communicates with the
 	  PHY using the MDIO bus.
 
+config PHY_ADIN2111
+	bool "ADIN2111 PHY driver"
+	default y
+	depends on DT_HAS_ADI_ADIN2111_PHY_ENABLED
+	depends on ETH_ADIN2111
+	depends on MDIO_ADIN2111
+	help
+	  Enable ADIN2111 PHY driver.
+
 config PHY_AUTONEG_TIMEOUT_MS
 	int "Auto-negotiation timeout value in milliseconds"
 	default 4000