arm64: zynqmp: Add new header file for zcu104 RevC

Created a new header file for zcu104 RevC board and added below
configurations to use MAC address from EEPROM.
	CONFIG_ZYNQ_GEM_EEPROM_ADDR
	CONFIG_ZYNQ_EEPROM_BUS
Added CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET=0x20 to
xilinx_zynqmp_zcu104_revC_defconfig

Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/configs/xilinx_zynqmp_zcu104_revC_defconfig b/configs/xilinx_zynqmp_zcu104_revC_defconfig
index 33258e4..0357b17 100644
--- a/configs/xilinx_zynqmp_zcu104_revC_defconfig
+++ b/configs/xilinx_zynqmp_zcu104_revC_defconfig
@@ -1,5 +1,5 @@
 CONFIG_ARM=y
-CONFIG_SYS_CONFIG_NAME="xilinx_zynqmp_zcu104"
+CONFIG_SYS_CONFIG_NAME="xilinx_zynqmp_zcu104_revC"
 CONFIG_ARCH_ZYNQMP=y
 CONFIG_SYS_TEXT_BASE=0x8000000
 CONFIG_SYS_MALLOC_F_LEN=0x8000
@@ -53,6 +53,7 @@
 CONFIG_SYS_I2C_ZYNQ=y
 CONFIG_ZYNQ_I2C1=y
 CONFIG_MISC=y
+CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET=0x20
 CONFIG_DM_MMC=y
 CONFIG_MMC_SDHCI=y
 CONFIG_MMC_SDHCI_ZYNQ=y