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/siemens/rut/board.c b/board/siemens/rut/board.c
index 539ecef..d7d9738 100644
--- a/board/siemens/rut/board.c
+++ b/board/siemens/rut/board.c
@@ -13,6 +13,7 @@
 #include <common.h>
 #include <env.h>
 #include <errno.h>
+#include <init.h>
 #include <spi.h>
 #include <spl.h>
 #include <asm/arch/cpu.h>