V4L/DVB (13761): [Mantis] HIF I/O: Temporary workaround, use SBUF_OPDONE flag instead

Dnumgis got hit with this bug, using a temporary workaround
for the time being rather than digging deep at this point.

Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>