xilinx: zynq: Enable early eeprom decoding

Xilinx Zynq evaluation boards have factory program content in eeprom.
Enable reading and decoding eeprom content to get information about board
name, revision and especially getting ethernet mac address.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/db334bd3c0a377074a43b7ae479fade98efb545f.1664265344.git.michal.simek@amd.com

board/xilinx/zynq/board.c

@@ -37,6 +37,9 @@ int board_init(void)
 	if (IS_ENABLED(CONFIG_SPL_BUILD))
 		printf("Silicon version:\t%d\n", zynq_get_silicon_version());
 
+	if (CONFIG_IS_ENABLED(DM_I2C) && CONFIG_IS_ENABLED(I2C_EEPROM))
+		xilinx_read_eeprom();
+
 	return 0;
 }