anv: Enable independentBlend on gen7

We can totally do it, we were just only setting up one BLEND_STATE and, now
that the code is unified with gen8, we should be handling it correctly.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "12.0" <mesa-stable@lists.freedesktop.org>
1 file changed