arm: keystone2: Rename CONFIG_ENV_KS2_BOARD_SETTINGS

Rename CONFIG_ENV_KS2_BOARD_SETTINGS to ENV_KS2_BOARD_SETTINGS so that
it better fits with the rest of the environment addition macros.

Cc: Vitaly Andrianov <vitalya@ti.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/k2g_evm.h b/include/configs/k2g_evm.h
index 4471eb4..17245ab 100644
--- a/include/configs/k2g_evm.h
+++ b/include/configs/k2g_evm.h
@@ -16,7 +16,7 @@
 #define CONFIG_SOC_K2G
 
 /* U-Boot general configuration */
-#define CONFIG_EXTRA_ENV_KS2_BOARD_SETTINGS				\
+#define ENV_KS2_BOARD_SETTINGS						\
 	DEFAULT_MMC_TI_ARGS						\
 	DEFAULT_PMMC_BOOT_ENV						\
 	DEFAULT_FW_INITRAMFS_BOOT_ENV					\