headers: kobject.h redux

Remove kobject.h from files which don't need it, notably,
sched.h and fs.h.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/security/apparmor/include/match.h b/security/apparmor/include/match.h
index 734a6d3..19ba16e 100644
--- a/security/apparmor/include/match.h
+++ b/security/apparmor/include/match.h
@@ -15,6 +15,7 @@
 #ifndef __AA_MATCH_H
 #define __AA_MATCH_H
 
+#include <linux/kref.h>
 #include <linux/workqueue.h>
 
 #define DFA_NOMATCH			0