[PATCH v2 0/1] arch: zynqmp: Make zynqmp command more accessible.

[Charlie Johnston]

While working on a third-party board using a ZynqMP, I was unable to use
the zynqmp command even with the proper config definitions. While that
command appears tied to the architecture, it was being included based on
the board selection instead.

This patch series moves the command to be accessible to any ZynqMP arch
based board.

Changes since v1:
- Squash into a single commit
- Command is now moved into arch tree instead of cmd tree