MX5:MX53: add initial support for MX53EVK board

Add initial support for MX53EVK board support.
FEC, SD/MMC, UART, I2C, have been supported.

Signed-off-by: Jason Liu <r64343@freescale.com>
diff --git a/include/mc13892.h b/include/mc13892.h
index 61c3e6e..001cf56 100644
--- a/include/mc13892.h
+++ b/include/mc13892.h
@@ -160,4 +160,9 @@
 /* Reg Power Control 2*/
 #define WDIRESET	(1 << 12)
 
+/* SWx Output Volts */
+#define SWX_OUT_MASK	0x1F
+#define SWX_OUT_1_25	0x1A
+#define SWX_OUT_1_30    0X1C
+
 #endif