soc: qcom: rpmpd: Add QCM2290 support

QCM2290 has the same RPM power domains as SM6115.  Add QCM2290
support by reusing SM6115 power domains.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211108134442.30051-4-shawn.guo@linaro.org