Make file bug fix
datapath: Account for rename to vlan_insert_tag_set_proto()

__vlan_put_tag() was renamed to vlan_insert_tag_set_proto() with
the argument list kept intact.

Relates-to: 62749e ("vlan: rename __vlan_put_tag to vlan_insert_tag_set_proto")
Signed-off-by: Thomas Graf <tgraf@noironetworks.com>