mmc: omap5evm: Add eMMC saveenv support

Save env to eMMC

Signed-off-by: Balaji T K <balajitk@ti.com>

include/configs/omap5_evm.h

@@ -114,6 +114,7 @@
 #define CONFIG_ENV_IS_IN_MMC
 #define CONFIG_SYS_MMC_ENV_DEV		1	/* SLOT2: eMMC(1) */
 #define CONFIG_ENV_OFFSET		0xE0000
+#define CONFIG_CMD_SAVEENV
 
 #define CONFIG_SYS_CONSOLE_IS_IN_ENV