virgl: don't mark buffers as unclean after a write
We can mark the buffer unclean if it's ever bound as a TBO, SSBO, ABO, or image. This improves dEQP-GLES3.performance.buffer.data_upload.function_call.map_buffer_range.new_specified_buffer.flag_write_full.stream_draw from 9.58 MB/s to 451.17 MB/s. v2: Track buffer cleanliness as a function of bindings (Ilia). v3: virgl_modify_clean --> virgl_dirty_res (Erik) Tested-By:Gert Wollny <gert.wollny@collabora.com> Reviewed-by:
Erik Faye-Lund <erik.faye-lund@collabora.com>