common: Drop bootstage.h from common header

Move this fairly uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/gdsys/p1022/controlcenterd-id.c b/board/gdsys/p1022/controlcenterd-id.c
index ad56dd7..3da5005 100644
--- a/board/gdsys/p1022/controlcenterd-id.c
+++ b/board/gdsys/p1022/controlcenterd-id.c
@@ -11,6 +11,7 @@
 #endif
 
 #include <common.h>
+#include <bootstage.h>
 #include <command.h>
 #include <dm.h>
 #include <env.h>