freedreno/ir3: fix rasterflat/glxgears
Ofc legacy gl features that are broken don't trigger fails in deqp. I should remember to test glxgears more often. Fixes: 7ff6705b freedreno/ir3: convert to "new style" frag inputs Signed-off-by:Rob Clark <robdclark@chromium.org> (cherry picked from commit 9faf218b)