ARM: dts: Add Axxia AXM55xx device tree files

commit  514512d2742c1a82aee9b78b8bcd128d02bd5e12 from
https://github.com/axxia/linux-yocto.git axxia-linux/v5.10/standard/axxia-dev/base

Add device tree files for:
- Amarillo validation board with chips from Intel Axxia AXM55xx
  family with 8, 12 or 16 cores;
- Emulation Platform with chips with 4, or 7 cores;
- Simulation Platform AXM55xx with chips with 4 or 16 cores and
  other features.

Signed-off-by: John Jacques <john.jacques@intel.com>
Signed-off-by: Anders Berg <anders.berg@intel.com>
Signed-off-by: SangeethaRao <sangeetha.rao@intel.com>
Signed-off-by: Sreedevi Joshi <sreedevi.joshi@intel.com>
Signed-off-by: Palani <palaniappan.ramanathan@intel.com>
Signed-off-by: Charlie Paul <charlie.paul@windriver.com>
Signed-off-by: Daniel Dragomir <daniel.dragomir@windriver.com>
Signed-off-by: Quanyang Wang <quanyang.wang@windriver.com>