Add VC4,VC5 and Vivante GPUs

[robertfoss]

No description provided.

[MightyCreak]

Thanks for the PR.
I'll merge it as soon as the features.txt file starts to track these drivers.

[volkertb]

Now that @anholt has renamed the VC5 driver to V3D (in preparation for VC6 support in the same driver), shouldn't the change in this PR be updated to account for that as well? See https://www.phoronix.com/scan.php?page=news_item&px=Broadcom-V3D-For-Mainline

[MightyCreak]

I'm still waiting for the features.txt file to list the VC4, VC5 and Vivante drivers. I haven't forgotten you 😄

[austriancoder]

@MightyCreak Here we go :)

https://cgit.freedesktop.org/mesa/mesa/commit/?id=8dd26fa2f065e78f3204357d8b474656b9ea81db

[MightyCreak]

I'll add etnaviv as soon as I can find time (it's quite busy both in life and in the job right now ;) ).

Edit: That being said, this driver is going to look quite sad since there's only one extension done in features.txt (I think the driver can actually do much more than that)

[agx]

@MightyCreak thanks for looking into adding etnaviv. Having it listed in it's current state will help to go after the other missing extensions ;)

[austriancoder]

@MightyCreak the driver will look sad for some time.. but we are working hard to improve it.

[MightyCreak]

I didn't forget you 😉
I just tested to add etnaviv and it works pretty well. That being said, I'm starting to miss some space to display all the drivers, but I won't bother for now, it'll be better on wide screens only for some time.

[MightyCreak]

Closing this PR, see #149 for explanations why.