soc/qcom: Make QCOM_RPMPD select PM_GENERIC_DOMAINS/_OF

The driver uses generic genpd OF APIs and with a very minimal config
where nothing else selects them, this driver will not probe, as
of_genpd_add_provider_onecell will return -EOPNOTSUPP.

Make sure to select these in Kconfig to prevent that.
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220701073700.17124-1-konrad.dybcio@somainline.org

drivers/soc/qcom/Kconfig

@@ -130,6 +130,8 @@ config QCOM_RPMHPD
 config QCOM_RPMPD
 	tristate "Qualcomm RPM Power domain driver"
 	depends on QCOM_SMD_RPM
+	select PM_GENERIC_DOMAINS
+	select PM_GENERIC_DOMAINS_OF
 	help
 	  QCOM RPM Power domain driver to support power-domains with
 	  performance states. The driver communicates a performance state