feat(invalid-access): dynamically map/unmap test region

Invalid-access test suites are negative tests which tries to access
memory address from a world which does not have privilege. This causes
a memory fault which is caught by tftf framework.

Dynamically map/unmap these addresses during the test

Signed-off-by: Manish Pandey <manish.pandey2@arm.com>
Change-Id: Icb5d77d15ef4c4c352f6c646d756315a75b129cd
1 file changed