ARM: dts: qcom-msm8974: Fix up mdss nodes

Fix up formatting, move status=disabled to the end where it belongs,
rename DSI PHY label to match newer DTs, use tabs where possible,
unwrap lines where wrapping is not necessary and don't disable mdp,
as MDSS is useless without it.

Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220415115633.575010-6-konrad.dybcio@somainline.org