security: pass mount flags to security_sb_kern_mount()

Pass mount flags to security_sb_kern_mount(), so security modules
can determine if a mount operation is being performed by the kernel.

Signed-off-by: James Morris <jmorris@namei.org>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
diff --git a/fs/super.c b/fs/super.c
index 400a760..ddba069 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -914,7 +914,7 @@
 		goto out_free_secdata;
 	BUG_ON(!mnt->mnt_sb);
 
- 	error = security_sb_kern_mount(mnt->mnt_sb, secdata);
+ 	error = security_sb_kern_mount(mnt->mnt_sb, flags, secdata);
  	if (error)
  		goto out_sb;