BTTV detection broken in 2.4.0-test11-pre5

[Werner Almesberger <Werner.Almesberger@epfl.ch>]

The BTTV driver 0.7.48 doesn't detect my old Hauppauge card anymore.
The problem seems to be that my card sets PCI_SUBSYSTEM_ID and
PCI_SUBSYSTEM_VENDOR_ID to zero (lspci output below).

In 2.4.0-test10-pre5, the card was correctly detected as a
"Hauppauge old". If I set btv->type to 2 in 2.4.0-test11-pre5, the
card is properly initialized and works.

Not sure what the correct fix is. Maybe to fall back to vendor/device
ID if there's no subsystem information ?

- Werner

---------------------------------- cut here -----------------------------------

# lspci -v -s 00:0f.0      
00:0f.0 Multimedia video controller: Brooktree Corporation Bt848 TV with DMA push (rev 12)
        Flags: bus master, medium devsel, latency 64, IRQ 9
        Memory at eddfe000 (32-bit, prefetchable) [size=4K]
# lspci -x -s 00:0f.0 -n
00:0f.0 Class 0400: 109e:0350 (rev 12)
00: 9e 10 50 03 06 00 80 02 12 00 00 04 00 40 00 00
10: 08 e0 df ed 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
30: 00 00 00 00 00 00 00 00 00 00 00 00 09 01 10 28

-- 
  _________________________________________________________________________
 / Werner Almesberger, ICA, EPFL, CH           Werner.Almesberger@epfl.ch /
/_IN_N_032__Tel_+41_21_693_6621__Fax_+41_21_693_6610_____________________/
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