NFSD: Update the NFSv2 GETACL argument decoder to use struct xdr_stream

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
diff --git a/fs/nfsd/xdr3.h b/fs/nfsd/xdr3.h
index 64af5b0..43db420 100644
--- a/fs/nfsd/xdr3.h
+++ b/fs/nfsd/xdr3.h
@@ -102,7 +102,7 @@ struct nfsd3_commitargs {
 
 struct nfsd3_getaclargs {
 	struct svc_fh		fh;
-	int			mask;
+	__u32			mask;
 };
 
 struct posix_acl;