common: Move some board functions out of common.h

A number of board function belong in init.h with the others. Move them.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/board/freescale/mx25pdk/mx25pdk.c b/board/freescale/mx25pdk/mx25pdk.c
index c59f0fb..6898e9c 100644
--- a/board/freescale/mx25pdk/mx25pdk.c
+++ b/board/freescale/mx25pdk/mx25pdk.c
@@ -6,6 +6,7 @@
  */
 
 #include <common.h>
+#include <init.h>
 #include <asm/io.h>
 #include <asm/gpio.h>
 #include <asm/arch/imx-regs.h>