test(memory share): make TX buffer realm

Test case scenario in which the NWd changes the PAS of the TX
buffer to realm, and invokes FFA_MEM_SHARE ABI.
SPMC should be able to recover and return FFA_ERROR_ABORTED.

Change-Id: I0f0d833f6a7dcf019deaa5ac661f12060c3427c2
Signed-off-by: J-Alves <joao.alves@arm.com>
2 files changed