ARM: dts: qcom: msm8974-FP2: Add supplies for remoteprocs

Those were removed from msm8974.dtsi as part of a recent cleanup commit,
so add them back for FP2.

Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220421214243.352469-3-luca@z3ntu.xyz