test(realm): add test for multi rec planes

Test exercises SMC_PSCI_CPU_ON from aux plane.
Request is first routed to P0 and then to Host.
Host enters P0 and then P1 on all CPUs.

Change-Id: I7e34a0070ffa7305b97a0d93de62b64042771a18
Signed-off-by: Shruti Gupta <shruti.gupta@arm.com>
10 files changed