phy: qcom: qmp-combo: fix Display Port PHY configuration for SM8550

The SM8550 PHY also uses a different offset for the CMN_STATUS reg,
use the right one for the v6 Display Port configuration.

Fixes: 49742e9e ("phy: qcom-qmp-combo: Add support for SM8550")
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230601-topic-sm8550-upstream-dp-phy-init-fix-v1-1-4e9da9f97991@linaro.org


Signed-off-by: Vinod Koul <vkoul@kernel.org>