Add new PCI ids for WCH CH353 2Serial 1Parallel Multi-IO PCI Card to
parport_serial.c.

To allow parport_serial to handle the card the same PCI ids are blacklisted
in 8250_pci.c using the existing softmodem blacklist mechanism.

The blacklist array is also renamed because it now covers this new use case.

Since the two serial ports are autodetected as XScale instead of 16550A clones,
add also a quirk to 8250_pci.c to skip autodetection and set the correct port
type.

The patch is against linux v3.5.3 but applies cleanly also to latest git head.

Signed-off-by: Gianluca Anzolin <gianluca@sottospazio.it>