arm64: dts: qcom: qcs6490-rb3gen2: Correct the voltage setting for vph_pwr

arm64: dts: qcom: qcs6490-rb3gen2: Correct the voltage setting for vph_pwr

Min and max voltages for vph_pwr should be same, otherwise rpmh
will not probe, so correcting the min and max voltages for vph_pwr.

Fixes: 04cf333afc75 ("arm64: dts: qcom: Add base qcs6490-rb3gen2 board dts")
Signed-off-by: Komal Bajaj <quic_kbajaj@quicinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20231220110015.25378-3-quic_kbajaj@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>