media: hantro: Add scaling lists feature

If the bitstream embedded scaling lists allow the driver to use
them for decode the frames.
The scaling lists are expected to be in raster scan order (i.e. not up
right diagonal scan order)
Allocate the memory needed to store lists.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
[hverkuil: add missing @scaling kernel doc description in hantro_hw.h]
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>