apparmor: sparse fix: include procattr.h in procattr.c

Fix sparse warnings:
security/apparmor/procattr.c:35:5: warning: symbol 'aa_getprocattr' was not declared. Should it be static?
security/apparmor/procattr.c:113:5: warning: symbol 'aa_setprocattr_changehat' was not declared. Should it be static?
security/apparmor/procattr.c:158:5: warning: symbol 'aa_setprocattr_changeprofile' was not declared. Should it be static?
security/apparmor/procattr.c:166:5: warning: symbol 'aa_setprocattr_permipc' was not declared. Should it be static?

Signed-off-by: James Morris <jmorris@namei.org>
Acked-by: John Johansen <john.johansen@canonical.com>

security/apparmor/procattr.c

@@ -16,6 +16,7 @@
 #include "include/context.h"
 #include "include/policy.h"
 #include "include/domain.h"
+#include "include/procattr.h"
 
 
 /**