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/cirrus/edb93xx/edb93xx.c b/board/cirrus/edb93xx/edb93xx.c
index b64ec95..0318bf1 100644
--- a/board/cirrus/edb93xx/edb93xx.c
+++ b/board/cirrus/edb93xx/edb93xx.c
@@ -16,6 +16,7 @@
 #include <config.h>
 #include <common.h>
 #include <cpu_func.h>
+#include <init.h>
 #include <irq_func.h>
 #include <net.h>
 #include <netdev.h>