GitLab

Add a simple method that allows to query a single control of a
V4L2Device and use it in the V4L2VDA. This will also come handy for the
V4L2VD.

BUG=b:149663704
TEST=VDAtest --use_vd passes on Kukui.

Change-Id: I9e306fcf4115936dde07e8595631b86ceeb6e917
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2143425
Commit-Queue: Alexandre Courbot <acourbot@chromium.org>
Reviewed-by: Jeffrey Kardatzke <jkardatzke@google.com>
Cr-Commit-Position: refs/heads/master@{#759134}