common: Drop init.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/renesas/draak/draak.c b/board/renesas/draak/draak.c
index 2f9364c..5f37a19 100644
--- a/board/renesas/draak/draak.c
+++ b/board/renesas/draak/draak.c
@@ -9,6 +9,7 @@
 #include <common.h>
 #include <cpu_func.h>
 #include <hang.h>
+#include <init.h>
 #include <malloc.h>
 #include <netdev.h>
 #include <dm.h>