drivers: eth: phy: add AR8031 PHY driver

Add PHY driver support for Qualcomm AR8031, it can use fixed link
or use auto negotiation.

Signed-off-by: Jiafei Pan <[email protected]>

Author: JiafeiPan

drivers/ethernet/phy/CMakeLists.txt

@@ -5,3 +5,4 @@ zephyr_library_sources_ifdef(CONFIG_PHY_ADIN2111	phy_adin2111.c)
 zephyr_library_sources_ifdef(CONFIG_PHY_TJA1103	        phy_tja1103.c)
 zephyr_library_sources_ifdef(CONFIG_PHY_MICROCHIP_KSZ8081	phy_microchip_ksz8081.c)
 zephyr_library_sources_ifdef(CONFIG_PHY_REALTEK_RTL8211F phy_realtek_rtl8211f.c)
+zephyr_library_sources_ifdef(CONFIG_PHY_QUALCOMM_AR8031 phy_qualcomm_ar8031.c)

drivers/ethernet/phy/Kconfig

@@ -59,6 +59,14 @@ config PHY_REALTEK_RTL8211F
 	help
 	  Enable Realtek RTL8211F Ethernet PHY Driver
 
+config PHY_QUALCOMM_AR8031
+	bool "Qualcomm Atheros AR8031 Ethernet PHY Driver"
+	default y
+	depends on DT_HAS_QCA_AR8031_ENABLED
+	depends on MDIO
+	help
+	  Enable Qualcomm Atheros AR8031 Ethernet PHY Driver
+
 config PHY_AUTONEG_TIMEOUT_MS
 	int "Auto-negotiation timeout value in milliseconds"
 	default 4000