panfrost: Drop blend indirection

We don't need to ralloc/memcpy/free, we can emit all at once when we
have proper write ordering gaurantees.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6476>
1 file changed