radeonsi: accept pipe_resource in si_sampler_view_add_buffer

and rename .._buffers -> .._buffer

Based loosely on Nicolai's patch. This will make it easier to cherry-pick
Nicolai's patches from his image support branch.

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
1 file changed