pmdomain: qcom: rpmhpd: Add qcs8300 power domains

pmdomain: qcom: rpmhpd: Add qcs8300 power domains

Add support for the power domains exposed by RPMh on the qcs8300
platform. MMCX depends on CX, so mark CX as the parent of MMCX.

Co-developed-by: Shazad Hussain <quic_shazhuss@quicinc.com>
Signed-off-by: Shazad Hussain <quic_shazhuss@quicinc.com>
Signed-off-by: Tingguo Cheng <quic_tingguoc@quicinc.com>
Link: https://lore.kernel.org/r/20240927-add_qcs615_qcs8300_powerdomains_driver_support-v2-2-18c030ad7b68@quicinc.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>