[U-Boot] ARM: PSCI 0.1 vs 0.2

[Jan Kiszka]

Hi Marc,

what is the motivation to expose a PSCI 0.1 interface in U-boot, instead
of 0.2? Support for preexisting users of 0.1? The kernel seems to be
happy with both, and I'm now wondering if we should actually add the
legacy version to Jailhouse as well (I hope we can avoid this).

Still studying the logic: Is it possible to provide both interfaces, and
would it make sense?

Jan