devlink: remove pointless data_len arg from region snapshot create

The size of the snapshot has to be the same as the size of the region,
therefore no need to pass it again during snapshot creation. Remove the
arg and use region->size instead.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/devlink.h b/include/net/devlink.h
index bc36f94..451268f 100644
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -702,7 +702,7 @@ struct devlink_region *devlink_region_create(struct devlink *devlink,
 					     u64 region_size);
 void devlink_region_destroy(struct devlink_region *region);
 u32 devlink_region_shapshot_id_get(struct devlink *devlink);
-int devlink_region_snapshot_create(struct devlink_region *region, u64 data_len,
+int devlink_region_snapshot_create(struct devlink_region *region,
 				   u8 *data, u32 snapshot_id,
 				   devlink_snapshot_data_dest_t *data_destructor);
 int devlink_info_serial_number_put(struct devlink_info_req *req,