[media] media: davinci: vpbe: return -ENODATA for *dv_timings/*_std calls

this patch adds support for returning -ENODATA if the current
output doesn't support it.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>