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/isee/igep00x0/igep00x0.c b/board/isee/igep00x0/igep00x0.c
index 0ad601f..887ec6a 100644
--- a/board/isee/igep00x0/igep00x0.c
+++ b/board/isee/igep00x0/igep00x0.c
@@ -5,6 +5,7 @@
  */
 #include <common.h>
 #include <env.h>
+#include <init.h>
 #include <malloc.h>
 #include <net.h>
 #include <status_led.h>