soc: qcom: Make QCOM_RPMPD depend on OF

WARNING: unmet direct dependencies detected for PM_GENERIC_DOMAINS_OF
  Depends on [n]: PM_GENERIC_DOMAINS [=y] && OF [=n]
  Selected by [m]:
  - QCOM_RPMPD [=m] && PM [=y] && QCOM_SMD_RPM [=m]

PM_GENERIC_DOMAINS_OF depends on OF, so QCOM_RPMPD also depends on it.

Fixes: 7d0221fb ("soc/qcom: Make QCOM_RPMPD select PM_GENERIC_DOMAINS/_OF")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220820113202.23940-1-yuehaibing@huawei.com