sja1000: Driver for some PLX PCI bridge + sja1000 CAN controllers

sja1000: Driver for some PLX PCI bridge + sja1000 CAN controllers

It's a next version of sja1000_plx_pci driver.
In struct plx_pci_card_info pointer to device-dependent reset function was
added. It's necessary for special reset operations which take place in
some cards (like Marathon CAN-bus-PCI).
Also, I've introduced a special reset function for Marathon card. This
function incapsulates ability to reset the SJA1000 on such cards.

plx_pci_check_sja1000 was slightly modified for a purpose of exhaustive
checking.

Signed-off-by: Pavel Cheblakov <P.B.Cheblakov@inp.nsk.su>
git-svn-id: svn://svn.berlios.de//socketcan/trunk@1120 030b6a49-0b11-0410-94ab-b0dab22257f2