Merge branch '20230411-topic-hanaau-v2-1-fd3d70844b31@linaro.org' into arm64-fixes-for-6.4

Merge the RPMPD DeviceTree binding update through a topic branch, so
make the constants available to both driver and DeviceTree source
branches. Keep the two parts on separate branches to allow merge-back if
necessary towards v6.5.