drm/msm/dpu: drop compatibility INTR defines

drm/msm/dpu: drop compatibility INTR defines

While reworking interrupts masks, it was easier to keep old
MDP_INTFn_7xxx_INTR and MDP_INTFn_7xxx_TEAR_INTR symbols. Now it is time
to drop them and use unified symbol names.

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/549656/
Link: https://lore.kernel.org/r/20230727144543.1483630-6-dmitry.baryshkov@linaro.org