feat(runtime/rmi): implement RMI_DEV_MEM_(UN)MAP

- Implement RMI_DEV_MEM_MAP and RMI_DEV_MEM_UNMAP
commands as per RMM Specification 1.1-alp12.
Update RMI_RTT_READ_ENTRY and RMI_RTT_FOLD to
support entries with HIPAS=ASSIGNED_DEV.
- Fix comment for VTCR_SH0_IS in VTCR_FLAGS macro
definition.

Change-Id: I830c37b89bf1e4355ad1e3bbe8696dfc6220b6d0
Signed-off-by: AlexeiFedorov <Alexei.Fedorov@arm.com>
16 files changed