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/timll/devkit8000/devkit8000.c b/board/timll/devkit8000/devkit8000.c
index b037d72..cbb2199 100644
--- a/board/timll/devkit8000/devkit8000.c
+++ b/board/timll/devkit8000/devkit8000.c
@@ -18,6 +18,7 @@
 #include <common.h>
 #include <dm.h>
 #include <env.h>
+#include <init.h>
 #include <malloc.h>
 #include <ns16550.h>
 #include <twl4030.h>