plugins: add iHD driver in whitelist

Thus it won't be required to export GST_VAAPI_ALL_DRIVERS

CC @He_Junyan @ullysses.a.eoff

good for hear that. Add @haihao

LGTM

This looks rather urgent since debian testing has imported libva 2.6.0 which tries the available driver, one-by-one, and iHD is tried first, i965 later, thus if user installs intel-media-va-driver-non-free it won't have VAAPI enabled by default.

Are there something that we can help?

assigned to @gstreamer-merge-bot

assigned to @vjaquez and unassigned @gstreamer-merge-bot

I couldn't merge this branch: Failed to push rebased changes, check my logs!

resolved all threads

added 19 commits

• c4316e95...9bfc8240 - 18 commits from branch gstreamer:master
• 11a8175f - plugins: add iHD driver in whitelist

Compare with previous version

enabled an automatic merge when the pipeline for 11a8175f succeeds

merged

https://blogs.igalia.com/vjaquez/2020/01/08/gstreamer-vaapi-1-16-and-libva-2-6-in-debian/

changed milestone to %1.17.1