Some (many?) devices with A635 expect a ZAP shader to be loaded.

Set the file name to allow for that.
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/559605/Signed-off-by: Rob Clark <robdclark@chromium.org>