Juha-Pekka Heikkila authored Jun 11, 2018 and Thomas Guillem committed Jul 02, 2018

Add new kernel mode setting video output plugin.
By default it tries to match vlc suggested video mode to anything
kms api offers. There are command line parameters to control
which video format to use for both vlc and for drm.

kms-vlc-chroma parameter to force VLC to use FourCC as output.
kms-drm-chroma parameter to overide DRM requested framebuffer type.

Signed-off-by: Thomas Guillem <thomas@gllm.fr>