ZynqMP SoC embeds two separate processor types: Cortex-R for RPU and
Cortex-A for APU.
Since the current Zephyr architecture cannot support AMP of Cortex-R
and Cortex-A within one project, the RPU and APU should be considered
separate platforms.
This commit relocates the device tree nodes that are not common between
RPU and APU to a separate dtsi file (zynqmp_rpu.dtsi).
When Cortex-A53 APU support is added in the future, an additional dtsi
file (zynqmp_apu.dtsi) for specifying the APU device tree should be
added.
For more details, refer to the issue #20217.
Signed-off-by: Stephanos Ioannidis <root@stephanos.io>