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/alliedtelesis/x530/x530.c b/board/alliedtelesis/x530/x530.c
index 04b053d..1a6dec0 100644
--- a/board/alliedtelesis/x530/x530.c
+++ b/board/alliedtelesis/x530/x530.c
@@ -8,6 +8,7 @@
 #include <dm.h>
 #include <env.h>
 #include <i2c.h>
+#include <init.h>
 #include <wdt.h>
 #include <asm/gpio.h>
 #include <linux/mbus.h>