msm: wfd: Adds WFD v4l2 capture driver.

Captures the mirrored output from mdp
and passes it on to userspace. This
is added to support wifi-display (WFD).

Change-Id: Idcf1373ebae3b2107e4a9bb3ccc808be020d32c2
Signed-off-by: Vinay Kalia <vkalia@codeaurora.org>
6 files changed