Backport of "v4l2object: clear old fds when initializing poll during opening v4l2 device" into 1.22
requested to merge tpm/gstreamer:mr-5820-backport-into-1.22-clear_old_fds_in_poll_when_re_initializing_poll_during_opening_v4l2_device into 1.22
Backport of !5820 (merged) "v4l2object: clear old fds when initializing poll during opening v4l2 device".
Commits:
- 2e75b8c8 v4l2object: clear old fds in poll when closing v4l2object