xilinx: common: Move ZYNQ_GEM_I2C_MAC_OFFSET to board Kconfig

There is no reason to have ZYNQ specific Kconfig macro in generic location
to be visible for all other SoCs. That's why move it to Xilinx common
location to be visible only for us.
Also introduce new bool entry ZYNQ_MAC_IN_EEPROM to have also an option to
disable it or enable. This has connection to code which is reading the
whole content of i2c and also work with the rest of date not just with MAC
address.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

board/xilinx/Kconfig

@@ -56,3 +56,20 @@ config BOOT_SCRIPT_OFFSET
 	default 0x7F80000 if ARCH_VERSAL
 	help
 	   Specifies distro boot script offset in NAND/NOR flash.
+
+config ZYNQ_MAC_IN_EEPROM
+	bool "Reading MAC address from EEPROM"
+	help
+	  Enable this option if your MAC address is saved in eeprom and
+	  xlnx,eeprom DT property in chosen node points to it.
+
+if ZYNQ_MAC_IN_EEPROM
+
+config ZYNQ_GEM_I2C_MAC_OFFSET
+	hex "Set the I2C MAC offset"
+	default 0x0
+	depends on DM_I2C
+	help
+	  Set the MAC offset for i2C.
+
+endif

configs/avnet_ultrazedev_cc_v1_0_ultrazedev_som_v1_0_defconfig

@@ -8,6 +8,8 @@ CONFIG_DEBUG_UART_BASE=0xff000000
 CONFIG_DEBUG_UART_CLOCK=100000000
 CONFIG_SPL_SPI_FLASH_SUPPORT=y
 CONFIG_SPL_SPI_SUPPORT=y
+CONFIG_ZYNQ_MAC_IN_EEPROM=y
+CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET=0xfa
 CONFIG_DEFAULT_DEVICE_TREE="avnet-ultrazedev-cc-v1.0-ultrazedev-som-v1.0"
 CONFIG_DEBUG_UART=y
 CONFIG_DISTRO_DEFAULTS=y
@@ -42,7 +44,6 @@ CONFIG_I2C_MUX=y
 CONFIG_I2C_MUX_PCA954x=y
 CONFIG_MISC=y
 CONFIG_I2C_EEPROM=y
-CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET=0xfa
 CONFIG_MMC_SDHCI=y
 CONFIG_MMC_SDHCI_ZYNQ=y
 CONFIG_SPI_FLASH_BAR=y

configs/syzygy_hub_defconfig

@@ -9,6 +9,8 @@ CONFIG_SPL_STACK_R_ADDR=0x200000
 CONFIG_SPL=y
 CONFIG_DEBUG_UART_BASE=0xe0000000
 CONFIG_DEBUG_UART_CLOCK=50000000
+CONFIG_ZYNQ_MAC_IN_EEPROM=y
+CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET=0xFA
 CONFIG_DEFAULT_DEVICE_TREE="zynq-syzygy-hub"
 CONFIG_DEBUG_UART=y
 CONFIG_DISTRO_DEFAULTS=y
@@ -40,7 +42,6 @@ CONFIG_FPGA_XILINX=y
 CONFIG_FPGA_ZYNQPL=y
 CONFIG_DM_I2C=y
 CONFIG_SYS_I2C_CADENCE=y
-CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET=0xFA
 CONFIG_MMC_SDHCI=y
 CONFIG_MMC_SDHCI_ZYNQ=y
 CONFIG_PHY_MARVELL=y

configs/xilinx_zynqmp_virt_defconfig

@@ -7,6 +7,8 @@ CONFIG_DM_GPIO=y
 CONFIG_SPL=y
 CONFIG_SPL_SPI_FLASH_SUPPORT=y
 CONFIG_SPL_SPI_SUPPORT=y
+CONFIG_ZYNQ_MAC_IN_EEPROM=y
+CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET=0x20
 CONFIG_ZYNQMP_USB=y
 CONFIG_DEFAULT_DEVICE_TREE="zynqmp-zcu100-revC"
 CONFIG_AHCI=y
@@ -91,7 +93,6 @@ CONFIG_LED=y
 CONFIG_LED_GPIO=y
 CONFIG_MISC=y
 CONFIG_I2C_EEPROM=y
-CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET=0x20
 CONFIG_SYS_I2C_EEPROM_ADDR=0x0
 CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW=0x0
 CONFIG_SUPPORT_EMMC_BOOT=y

drivers/misc/Kconfig

@@ -376,13 +376,6 @@ config SPL_I2C_EEPROM
 	  This option is an SPL-variant of the I2C_EEPROM option.
 	  See the help of I2C_EEPROM for details.
 
-config ZYNQ_GEM_I2C_MAC_OFFSET
-	hex "Set the I2C MAC offset"
-	default 0x0
-	depends on DM_I2C
-	help
-	  Set the MAC offset for i2C.
-
 if I2C_EEPROM
 
 config SYS_I2C_EEPROM_ADDR