media: staging: rkisp1: capture: set default quantization on 'set_fmt'

On 's/try_fmt' ioctl, set the quantization field to
V4L2_QUANTIZATION_DEFAULT. This fixes the compliance
errors:

fail: v4l2-test-formats.cpp(357): quantization >= 0xff
fail: v4l2-test-formats.cpp(473): testColorspace(!node->is_io_mc, pix_mp.pixelformat, pix_mp.colorspace, pix_mp.ycbcr_enc, pix_mp.quantization)
test VIDIOC_TRY_FMT: FAIL
fail: v4l2-test-formats.cpp(357): quantization >= 0xff
fail: v4l2-test-formats.cpp(473): testColorspace(!node->is_io_mc, pix_mp.pixelformat, pix_mp.colorspace, pix_mp.ycbcr_enc, pix_mp.quantization)
test VIDIOC_S_FMT: FAIL

Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Acked-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>