video: driver: Update AV1D Line buffer calculation
For legacy codecs, the line buffers are calculated by assuming
OPB size (worst-case). However, for AV1D, the line buffer size
can be smaller than required if OPB is assumed. Hence, add an
exception for AV1D.
Change-Id: I25b6ae630994e8c4c216499c10d7c217ad550d2b
Signed-off-by: Mihir Ganu <[email protected]>