Merge changes from topic "ja/notifications"
* changes:
test(notifications): signaling from MP SP to UP SP
feat(cactus): enable notifications for cactus tertiary
test(notification): support included in FFA_PARTITION_INFO_GET
test(cactus): notifications support enabled in manifest
test(notifications): retrieve interrupt IDs
feat(notifications): update FFA_FEATURES test
feat(spm): add VM_ID macro to spm tests
test(notifications): NPI for per-vCPU notifications
feat: spm helper functions for MP tests
refactor(notifications): tidy global notifications to SP tests
test(notifications): NPI handling
feat(cactus): validate NPI injection
test(notifications): validate SRI is delayed
test(ff-a): notifications SRI is not delayed
refactor(spm): managed exit tests
refactor(cactus): notification set command for SRI test
feat(cactus): count requests received
test(notifications): test schedule receiver interrupt
feat(tftf): improve notifications tests logging