arm64: dts: realtek: Add Kent SoC and EVB device trees
Add Device Tree hierarchy for Realtek Kent SoC family:
- kent.dtsi: base SoC layer
- rtd<variant>.dtsi: SoC variant layer
- rtd<variant>-<board>.dtsi: board layer
- rtd<variant>-<board>-<config>.dts: board configuration layer
Include RTD1501s Phantom EVB (8GB), RTD1861B Krypton EVB (8GB), and
RTD1920s Smallville EVB (4GB).
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20260127071530.25426-3-eleanor15x@gmail.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>