vfs: Use lowercase names of quota functions

Use lowercase names of quota functions instead of old uppercase ones.

Signed-off-by: Jan Kara <jack@suse.cz>
CC: Alexander Viro <viro@zeniv.linux.org.uk>

fs/sync.c

@@ -25,7 +25,7 @@ static void do_sync(unsigned long wait)
 {
 	wakeup_pdflush(0);
 	sync_inodes(0);		/* All mappings, inodes and their blockdevs */
-	DQUOT_SYNC(NULL);
+	vfs_dq_sync(NULL);
 	sync_supers();		/* Write the superblocks */
 	sync_filesystems(0);	/* Start syncing the filesystems */
 	sync_filesystems(wait);	/* Waitingly sync the filesystems */