arm64: dts: exynos: add initial support for exynosautov920 SoC

Samsung ExynosAutov920 is ARMv8-based automotive-oriented SoC.
It has AE(Automotive Enhanced) IPs for safety.
* Cortex-A78AE 10-cores
* GIC-600AE

This is minimal support for ExynosAutov920 SoC.
* Enumerate all pinctrl nodes
* Enable Chip-Id
* Serial0 for console
* PWM

Since the clock driver is not yet implemented, it is supported as
fixed-clock.

Signed-off-by: Jaewon Kim <jaewon02.kim@samsung.com>
Link: https://lore.kernel.org/r/20231208074527.50840-2-jaewon02.kim@samsung.com
[krzysztof: Re-order nodes to match coding style: UFS reset pins,
gpg/gpp in peric0 and peric1, all nodes in the soc@0;
drop fallback compatibles from wakeup-interrupt-controller]
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>