media: video: tegra: implement PCL kerner driver

media: video: tegra: implement PCL kerner driver

Implement unified PCL (physical camera layer) kernel driver. It will
virtualize all camera device driver to minimize kernel development.
Instead, camera devices can be configured and controlled solely from
the user space.

bug 1272149

Change-Id: I94614206e94895221e1697f65185e356887b1de3
Signed-off-by: Charlie Huang <chahuang@nvidia.com>
Reviewed-on: http://git-master/r/243508
(cherry picked from commit a9be39befa080a7eefeb469e6a73d4e409388b0f)
Reviewed-on: http://git-master/r/247526
Reviewed-by: Mandar Padmawar <mpadmawar@nvidia.com>
Tested-by: Mandar Padmawar <mpadmawar@nvidia.com>