[media] s5p-mfc: support MIN_BUFFERS query for encoder
[media] s5p-mfc: support MIN_BUFFERS query for encoder

Add V4L2_CID_MIN_BUFFERS_FOR_OUTPUT query for encoder.
Once mfc encoder state is HEAD_PARSED, which is sequence
header produced, dpb_count is avaialable. Let user space
query this value.

Signed-off-by: Kiran AVND <b4867c8938a2ca9156c8062629041fc13b6b7857@samsung.com>
Signed-off-by: Arun Kumar K <1178d5c4f25e2eee977127a861292da1c3e32ff6@samsung.com>
Signed-off-by: Kamil Debski <c76391f0c6ca952c7a383ba141fbed195fa466af@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <ad86ba2154032c9f55743a190faa2459a9d61d42@osg.samsung.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs