cifs: change CIFSSMBUnixQuerySymLink to use new helpers

Change CIFSSMBUnixQuerySymLink to use the new unicode helper functions.
Also change the calling conventions so that the allocation of the target
name buffer is done in CIFSSMBUnixQuerySymLink rather than by the caller.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: Suresh Jayaraman <sjayaraman@suse.de>
Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 4167716..7d54a5a 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -260,8 +260,7 @@
 			const struct nls_table *nls_codepage);
 extern int CIFSSMBUnixQuerySymLink(const int xid,
 			struct cifsTconInfo *tcon,
-			const unsigned char *searchName,
-			char *syminfo, const int buflen,
+			const unsigned char *searchName, char **syminfo,
 			const struct nls_table *nls_codepage);
 extern int CIFSSMBQueryReparseLinkInfo(const int xid,
 			struct cifsTconInfo *tcon,