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/ti/evm/evm.c b/board/ti/evm/evm.c
index 7161c93..d6d21ba 100644
--- a/board/ti/evm/evm.c
+++ b/board/ti/evm/evm.c
@@ -13,6 +13,7 @@
 #include <common.h>
 #include <dm.h>
 #include <env.h>
+#include <init.h>
 #include <net.h>
 #include <ns16550.h>
 #include <netdev.h>