arm64: zynqmp: Add description for SC on vm-p-m1369 board

Board is very similar to vn-p-b2197 with subset of functinality.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/fbc6d56c4aaa33113e35a53520320f4050ed141e.1727247815.git.michal.simek@amd.com
2 files changed