global: Migrate CONFIG_MXC_UART_BASE to CFG

Perform a simple rename of CONFIG_MXC_UART_BASE to CFG_MXC_UART_BASE

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/xpress.h b/include/configs/xpress.h
index 96996ac1..c8ae047 100644
--- a/include/configs/xpress.h
+++ b/include/configs/xpress.h
@@ -10,7 +10,7 @@
 #include "mx6_common.h"
 #include <asm/mach-imx/gpio.h>
 
-#define CONFIG_MXC_UART_BASE		MX6UL_UART7_BASE_ADDR
+#define CFG_MXC_UART_BASE		MX6UL_UART7_BASE_ADDR
 
 /* MMC Configs */
 #define CFG_SYS_FSL_ESDHC_ADDR	USDHC2_BASE_ADDR