arm64: dts: freescale: Add NXP S32N79 SoC support

arm64: dts: freescale: Add NXP S32N79 SoC support

Add device tree support for the NXP S32N79 automotive SoC [1].

The S32N79 features eight Arm Cortex-A78AE cores organized in four
dual-core clusters, with a three-level cache hierarchy (L1/L2 per core,
L3 per dual-core cluster) and 32GB of DRAM memory. It includes an SMMUv3
for IOMMU functionality.

On S32N79 SoC, peripherals are organized into subsystems, such as:
- CIS (Coherent Interconnect Subsystem)
- COSS (Connectivity Subsystem)
- FSS (Foundation Subsystem)

This initial support includes basic peripherals:
- GICv3, SMMUv3 from CIS Subsystem
- PL011 UARTs and IRQ steering controller from COSS Subsystem
- uSDHC from FSS Subsystem

Clock and Pin multiplexing settings for the chip are managed over SCMI.

[1] https://www.nxp.com/products/processors-and-microcontrollers/s32-automotive-platform/s32n-vehicle-super-integration-processors:S32N

Co-developed-by: Larisa Grigore <larisa.grigore@nxp.com>
Signed-off-by: Larisa Grigore <larisa.grigore@nxp.com>
Co-developed-by: Andra-Teodora Ilie <andra.ilie@nxp.com>
Signed-off-by: Andra-Teodora Ilie <andra.ilie@nxp.com>
Co-developed-by: Andrei Cherechesu <andrei.cherechesu@nxp.com>
Signed-off-by: Andrei Cherechesu <andrei.cherechesu@nxp.com>
Signed-off-by: Ciprian Marian Costea <ciprianmarian.costea@oss.nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>