dt-bindings: power: qcom-rpmpd: split RPMh domains definitions

dt-bindings: power: qcom-rpmpd: split RPMh domains definitions

Historically both RPM and RPMh domain definitions were a part of the
same, qcom-rpmpd.h header. Now as we have a separate header for RPMh
definitions, qcom,rpmhpd.h, move all RPMh power domain definitions to
that header.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20250718-rework-rpmhpd-rpmpd-v1-1-eedca108e540@oss.qualcomm.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>