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/t4rdb/t4240rdb.c b/board/freescale/t4rdb/t4240rdb.c
index 0c95607..48aa6b6 100644
--- a/board/freescale/t4rdb/t4240rdb.c
+++ b/board/freescale/t4rdb/t4240rdb.c
@@ -7,6 +7,7 @@
 #include <command.h>
 #include <env.h>
 #include <i2c.h>
+#include <init.h>
 #include <netdev.h>
 #include <linux/compiler.h>
 #include <asm/mmu.h>