arm64: dts: zynqmp: add AMS driver to device tree

Add an entry to the ZynqMP device tree to support the AMS device which
now has a driver in mainline.

Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Reviewed-by: Michael Tretter <m.tretter@pengutronix.de>
Link: https://lore.kernel.org/r/20220120010246.3794962-2-robert.hancock@calian.com


Signed-off-by: Michal Simek <michal.simek@xilinx.com>