st/va: add support for P010 and P016 formats v3

No hardware I know off can actually support P010 natively. But we can easily
support P016 and as long as nobody decodes anything into the lower 6bits it
doesn't make any difference to P010.

v2: allow P0160 for post processing as well
v3: fix post processing once more

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Mark Thompson <sw@jkqxz.net>
4 files changed