MX51: Support for TTECH vision2 board

The patch adds support for TTECH vision2 board.
The board has 512MB RAM, SDHC slot and 4MB SPI
device from StMicron.

Signed-off-by: Stefano Babic <sbabic@denx.de>
diff --git a/include/mc13892.h b/include/mc13892.h
index b291757..791e3ec 100644
--- a/include/mc13892.h
+++ b/include/mc13892.h
@@ -157,4 +157,7 @@
 #define VSDSTBY		(1 << 19)
 #define VSDMODE		(1 << 20)
 
+/* Reg Power Control 2*/
+#define WDIRESET	(1 << 12)
+
 #endif