Test: Add a negative test case for isolation level 3

To verify if the boundary is set up correctly inside SPE, create a test
case to access memory in another ARoT partition. This is a negative test
and it causes hang, the switch is default as OFF.

Change-Id: Ie1d17c18d78ff24133ff3e5dede37db1c37b23e6
Signed-off-by: Shawn Shan <Shawn.Shan@arm.com>
7 files changed