feat(amd): add test for self suspend EEMI API

Add tests for setting wakeup source and self-suspend EEMI APIs.
The purpose of these tests is to validate the setting up of wake up
source and for a cpu to declare that it is about to suspend itself.

Change-Id: I93374924703e03663b0d038a2aa79298e1cdb6f6
Signed-off-by: Madhav Bhatt <madhav.bhatt@amd.com>
6 files changed