media: zoran: remove deprecated .vidioc_g_jpegcomp

Remove the deprecated .vidioc_g_jpegcomp and replace it
with corresponding v4l2_ctrl_ops code.

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>