drm/nouveau/fifo: kill channel on a selection of PBDMA errors

drm/nouveau/fifo: kill channel on a selection of PBDMA errors

A bunch of these can be handled in such a way that the channel can
continue, however, any of these are a pretty decent sign something
has gone horribly wrong, and the safest option is to disable the
channel.

This is a bit of a hack, we will want to handle these individually
and dump relevant debug info for each at some point.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>