fix(versal): make pmc ipi channel as secure

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

Signed-off-by: Jay Buddhabhatti <jay.buddhabhatti@amd.com>
Change-Id: I22148653fa2d27941cb3031ac790892cee0d1796
(cherry picked from commit 96eaafa3f855ea9e0b6ce13a44f37fa9f1026207)
1 file changed