Closes part of #60 (firefox-side patch update for fourier2 ffmpeg).
Background: libavcodec61-fourier2 (Kwiboo v4l2-request-n7.1.3 backed)
registers its hwaccels with AV_HWDEVICE_TYPE_V4L2REQUEST (the dedicated
enum added in FFmpeg 7.1+), not AV_HWDEVICE_TYPE_DRM as fourier1 did.
The firefox-fourier patch #3 walked hw_configs looking only for DRM
and fell through to software for every codec.
Patch updates:
- CreateV4L2RequestDeviceContext now takes an int aDeviceType (Mozillas
bundled libavutil headers may lack the V4L2REQUEST enumerator), passed
through to av_hwdevice_ctx_create.
- hw_configs walk accepts DRM (legacy) OR V4L2REQUEST integer value
(13 on Kwibooss no-AMF tree, 14 on upstream-AMF tree).
- Renamed mDRMDeviceContext to mV4L2RequestDeviceContext for accuracy.
Build pkgrel will be bumped at debian-package level to +fourier2.
marfrit