staging:lustre: Fix variable type declaration

Fix the following sparse warnings generated by AND-ing FMODE_* constant
with a normal integer.

drivers/staging/lustre/lustre/llite/file.c:102:32: warning: restricted
fmode_t degrades to integer
Signed-off-by: Dulshani Gunawardhana <dulshani.gunawardhana89@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/include/lustre_lib.h

@@ -85,7 +85,7 @@ struct obd_client_handle {
 	struct lu_fid	 och_fid;
 	struct md_open_data  *och_mod;
 	__u32 och_magic;
-	int och_flags;
+	fmode_t och_flags;
 };
 #define OBD_CLIENT_HANDLE_MAGIC 0xd15ea5ed