iommu/arm-smmu-qcom: Select identity domain for sc8280xp MDSS

iommu/arm-smmu-qcom: Select identity domain for sc8280xp MDSS

The Qualcomm display driver installs a translation domain once it has
mapped a framebuffer. Use the identity domain for this device on
SC8280XP as well, to avoid faults from EFI FB accessing the framebuffer
while this is being set up.

Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230113041104.4189152-1-quic_bjorande@quicinc.com
Signed-off-by: Will Deacon <will@kernel.org>