merge xf86-video-ati 22.0.0.

fix a couple of issues found while testing new drm.

- actually check the return value of radeon_bo_open() in a three places
- for create_pixmap_for_fbcon(), release the bo when jumping to
'out_free_fb'. fixes memory leak.

When adding an FB, don't assume that the front buffer is a radeon buffer
(it could be GBM managed instead).

initial import of xf86-video-ati-19.0.1

initial import of xf86-video-ati-18.1.0

initial import of xf86-video-ati-18.0.0

initial import of xf86-video-ati-7.9.0

initial import of xf86-video-ati-7.8.0

initial import of xf86-video-ati-6.14.6

initial import of xf86-video-ati-7.8.0

initial import of xf86-video-ati-7.7.0

initial import of xf86-video-ati 7.5.0 sources, into a new subdir as
this only has a chance of working on systems with KMS -- -7 on x86
only, so we need to keep the 6.x around for everyone else.