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/lib/time.c b/lib/time.c
index 1395f28..3d6447d 100644
--- a/lib/time.c
+++ b/lib/time.c
@@ -8,6 +8,7 @@
 #include <bootstage.h>
 #include <dm.h>
 #include <errno.h>
+#include <init.h>
 #include <time.h>
 #include <timer.h>
 #include <watchdog.h>