spm: Add l2 boot test for spm feature

Add a full fledged system boot with secure Hafnium as SPMC and NWd
Hafnium hypervisor and Linux/Busybox as primary VM
- Linux PVM, Hyp(NS-EL2), SPMD(EL3), SPMC(S-EL2), Cactus(S-EL1)

Change-Id: I47a2ccb577ed68de75d1041197a20d3ddcb622cf
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>
Co-authored-by: Olivier Deprez <olivier.deprez@arm.com>
Co-authored-by: Manish Pandey <manish.pandey2@arm.com>
3 files changed