fix(versal-net): make pmc ipi channel as secure

Make PMC IPI channel for Versal NET as secure so that NS
systems cannot directly access or modify secure systems.

Signed-off-by: Jay Buddhabhatti <jay.buddhabhatti@amd.com>
Change-Id: I75ba8796859dcb35644f3e144d7dc5926755ef78
1 file changed