drm/msm/dpu: enable DPU_WB_INPUT_CTRL for DPU 5.x

[ Upstream commit af0a4a2090cce732c70ad6c5f4145b43f39e3fe9 ]

Several DPU 5.x platforms are supposed to be using DPU_WB_INPUT_CTRL,
to bind WB and PINGPONG blocks, but they do not. Change those platforms
to use WB_SM8250_MASK, which includes that bit.

Fixes: 1f5bcc43 ("drm/msm/dpu: enable writeback on SC8108X")
Fixes: ab2b03d7 ("drm/msm/dpu: enable writeback on SM6125")
Fixes: 47cebb74 ("drm/msm/dpu: enable writeback on SM8150")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/628876/
Link: https://lore.kernel.org/r/20241214-dpu-drop-features-v1-2-988f0662cb7e@linaro.org


Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>