global: Migrate CONFIG_ENV_SROM_BANK to CFG

Perform a simple rename of CONFIG_ENV_SROM_BANK to CFG_ENV_SROM_BANK

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/exynos5-common.h b/include/configs/exynos5-common.h
index 8e277ce..43ea34d 100644
--- a/include/configs/exynos5-common.h
+++ b/include/configs/exynos5-common.h
@@ -48,7 +48,7 @@
 
 /* Ethernet Controllor Driver */
 #ifdef CONFIG_CMD_NET
-#define CONFIG_ENV_SROM_BANK		1
+#define CFG_ENV_SROM_BANK		1
 #endif /*CONFIG_CMD_NET*/
 
 /* Enable Time Command */