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/compulab/cm_t35/cm_t35.c b/board/compulab/cm_t35/cm_t35.c
index b52358b..b714712 100644
--- a/board/compulab/cm_t35/cm_t35.c
+++ b/board/compulab/cm_t35/cm_t35.c
@@ -13,6 +13,7 @@
 
 #include <common.h>
 #include <env.h>
+#include <init.h>
 #include <status_led.h>
 #include <netdev.h>
 #include <net.h>