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/grinn/liteboard/board.c b/board/grinn/liteboard/board.c
index 151041a..5d71b63 100644
--- a/board/grinn/liteboard/board.c
+++ b/board/grinn/liteboard/board.c
@@ -5,6 +5,7 @@
  */
 
 #include <command.h>
+#include <init.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/iomux.h>
 #include <asm/arch/imx-regs.h>