mlxsw: spectrum_acl: Rename variables in mlxsw_sp_acl_tcam_ventry_migrate()

Remove some of variables in function mlxsw_sp_acl_tcam_ventry_migrate()
so the names are aligned with the rest of the code.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>