drm/msm/a5xx: fix setting of the CP_PREEMPT_ENABLE_LOCAL register

drm/msm/a5xx: fix setting of the CP_PREEMPT_ENABLE_LOCAL register

[ Upstream commit 2af7729c3c1e743d0ebcf89bae95d006eabe55fe ]

Rather than writing CP_PREEMPT_ENABLE_GLOBAL twice, follow the vendor
kernel and set CP_PREEMPT_ENABLE_LOCAL register instead. a5xx_submit()
will override it during submission, but let's get the sequence correct.

Fixes: 2ae99dd8e304 ("drm/msm: Implement preemption for A5XX targets")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/522638/
Link: https://lore.kernel.org/r/20230214020956.164473-2-dmitry.baryshkov@linaro.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>