Arm SoC fixes for 6.8, part 1

There are a couple of devicetree fixes for samsung, riscv/sophgo, and for
TPM device nodes on a couple of platforms.

Both the Arm FF-A and the SCMI firmware drivers get a number of code fixes,
addressing minor implementation bugs and compatibility with firmware
implementations. Most of these bugs relate to the usage of xarray and
rwlock structures and are fixed by Cristian Marussi.
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