arm64: dts: qcom: sm8250: stop using SoC-specific genpd indices

arm64: dts: qcom: sm8250: stop using SoC-specific genpd indices

The SM8250 has switched to RPMHPD_* indices for RPMh power domains,
however commit 86a9264b6c56 ("arm64: dts: qcom: sm8250: Add
interconnects and power-domains to QUPs") brought some more old-style
indices. Convert all of them to use common RPMh PD indices.

Fixes: 86a9264b6c56 ("arm64: dts: qcom: sm8250: Add interconnects and power-domains to QUPs")
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250718-fix-rpmhpd-abi-v2-3-0059edb9ddb3@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>