The equivalent bit is set correctly on JM, but was missed for CSF. There
shouldn't need to be any shader changes, the alpha-to-coverage flag in
FAU_ATEST_PARAM is set automatically from the bit in DcdFlags0.
Fixes dEQP-VK.pipeline.*.multisample.alpha_to_coverage*
Fixes: 447075eeee ("panfrost: Add support for the CSF job frontend")
Signed-off-by: Benjamin Lee <benjamin.lee@collabora.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Reviewed-by: Mary Guillemard <mary.guillemard@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32696>
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