Add the new option, function IDs, and prototypes for PSCI v1.1
implementations. In the process, fix some issues with the existing
definitions:
- Fix the incorrectly-named ARM_PSCI_0_2_FN64_SYSTEM_RESET2.
- Replace the deprecated "affinity_level" naming with "power_level".
Signed-off-by: Samuel Holland <samuel@sholland.org>