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/cortina/presidio-asic/presidio.c b/board/cortina/presidio-asic/presidio.c
index b4fa01f..427151c 100644
--- a/board/cortina/presidio-asic/presidio.c
+++ b/board/cortina/presidio-asic/presidio.c
@@ -4,6 +4,7 @@
  *
  */
 #include <common.h>
+#include <init.h>
 #include <malloc.h>
 #include <errno.h>
 #include <netdev.h>