V4L/DVB (4632): Zoran: Implement pcipci failure check

We should be doing this on all devices doing PCI<->PCI DMA. We only set
the _FAIL ones when the DMA will fail or may cause crashes. This relies
on the PCIAGP_FAIL patch I sent to Andrew already

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>