arm64: dts: qcom: pm8150: Enable RTC

The PM8150 comes with everything the RTC needs, so let's just leave it
enabled instead of having to explicitly enable it for all boards.
In effect this patch enables the RTC on the SM8150 MTP and the SM8250
HDK.

Acked-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210106001004.4081508-1-bjorn.andersson@linaro.org


Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>