radeon/r200/r300/r600: fix blit BO buffer validation

there is no need for these to be persistent since we flush the CS
at the end of the blit, and we don't reuse these buffers at all.

on my r600 the Wine DX9 test suite doesn't crash at least anymore.

Signed-off-by: Dave Airlie <airlied@redhat.com>
4 files changed