media: chips-media: wave5: Add the v4l2 layer

Add the decoder and encoder implementing the v4l2
API. This patch also adds the Makefile and the VIDEO_WAVE_VPU config

Signed-off-by: Sebastian Fricke <sebastian.fricke@collabora.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Robert Beckett <bob.beckett@collabora.com>
Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Signed-off-by: Nas Chung <nas.chung@chipsnmedia.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>