arm64: dts: qcom: msm8992/4: Rename vreg_vph_pwr to vph_pwr

Rename the fixed regulator to follow the common naming scheme

Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Link: https://lore.kernel.org/r/20210118162432.107275-4-konrad.dybcio@somainline.org


Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>