arm64: dts: qcom: sa8775p: fix RPMh power domain indices

arm64: dts: qcom: sa8775p: fix RPMh power domain indices

On SA8775P power domains device doesn't use unufied (RPMHPD_foo) ABI,
but it uses SoC-specific indices (SA8775P_foo). Consequently, all DSP on
that platform are referencing random PDs instead of the expected ones.

Correct indices used for that platform.

Fixes: df54dcb34ff2 ("arm64: dts: qcom: sa8775p: add ADSP, CDSP and GPDSP nodes")
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20250718-fix-rpmhpd-abi-v2-1-0059edb9ddb3@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>