This patch adds the H.264 video encoding capability in the V4L2 HVA
video encoder driver for STMicroelectronics SoC (hva-h264.c).
The main supported features are:
- profile: baseline, main, high, stereo high
- level: up to 4.2
- bitrate mode: CBR, VBR
- entropy mode: CABAC, CAVLC
- video aspect: 1x1 only