I am working on a device that will be ported later, which has a custom power management MCU
that handles LEDs, board power and fans and requires the separation of board power off functions.
Each Armada 8K platform can now register a system_power_off() function to handle power off using device specific
code instead of calling panic() in plat_pm.c
This proposed feature was implemented in a patch and sent to Gerrit: https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/3125