mlxsw: pci: Use MLXSW_PCI_CQS_MAX instead of MLXSW_PCI_CQS_COUNT

The count of CQs can be different for various ASICs, so just define
maximal value and check for that.

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