feat(versal2): add dummy implementation for SCMI PD

Add dummy implementation of power domain. There is dwc3 usb driver which
requires power domain to be setup and make sense to have interface prepared
even it is not doing anything. When this runs on real HW functionality will
be extended.

Change-Id: I68151edc3ab817da3308e7c21af57a3355a17d37
Signed-off-by: Michal Simek <michal.simek@amd.com>
2 files changed