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/dfi/dfi-bt700/dfi-bt700.c b/board/dfi/dfi-bt700/dfi-bt700.c
index 50cf6dc..f4c4b1d 100644
--- a/board/dfi/dfi-bt700/dfi-bt700.c
+++ b/board/dfi/dfi-bt700/dfi-bt700.c
@@ -4,6 +4,7 @@
  */
 
 #include <common.h>
+#include <init.h>
 #include <nuvoton_nct6102d.h>
 #include <asm/gpio.h>
 #include <asm/ibmpc.h>