Add device IDs for PSX 24xG3 and PSX 48xG3.  These are valid devices that
were missing from the existing device ID table for the Switchtec driver.
Signed-off-by: NKelvin Cao <kelvin.cao@microsemi.com>
Signed-off-by: NLogan Gunthorpe <logang@deltatee.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>