Merge changes from topic "ja/rxtx_protect"
* changes:
test(indirect message): aborted send from vm to sp
feat(ff-a): FFA_MSG_SEND2 helper with sender ID
test(indirect message): aborted send from SP to VM
fix(notifications): destroy VM's bitmap
test(indirect message): request SP to message VM
feat(cactus): ability to send indirect messages
feat(indirect message): send and receive messages
feat(ff-a): define framework notification helpers
feat(ff-a): add helpers for indirect message
chore: move test from xml file
test(rme): rxtx buffers are in the realm PAS
feat(ff-a): add helper FFA_RX_RELEASE with ID