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/Marvell/gplugd/gplugd.c b/board/Marvell/gplugd/gplugd.c
index fc2bc85..10236bd 100644
--- a/board/Marvell/gplugd/gplugd.c
+++ b/board/Marvell/gplugd/gplugd.c
@@ -12,6 +12,7 @@
  */
 
 #include <common.h>
+#include <init.h>
 #include <mvmfp.h>
 #include <asm/arch/cpu.h>
 #include <asm/arch/mfp.h>