arm64: dts: realtek: add missing cache properties

As all level 2 and level 3 caches are unified, add required
cache-unified and cache-level properties to fix warnings like:

rtd1293-ds418j.dtb: l2-cache: 'cache-level' is a required property
rtd1293-ds418j.dtb: l2-cache: 'cache-unified' is a required property

Link: https://lore.kernel.org/r/20230421223151.115243-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

arm64: dts: realtek: rtd129x: Fix GIC CPU masks for RTD1293

Convert from GIC_CPU_MASK_RAW() to GIC_CPU_MASK_SIMPLE().

In case of RTD1293 adjust the arch timer and VGIC interrupts'
CPU masks to its smaller number of CPUs.

Fixes: cf976f660ee8 ("arm64: dts: realtek: Add RTD1293 and Synology DS418j")
Signed-off-by: Andreas Färber <afaerber@suse.de>

arm64: dts: realtek: Add RTD1293 and Synology DS418j

Add Device Trees for RTD1293 SoC and Synology DiskStation DS418j NAS.

Cc: info@synology.com
Signed-off-by: Andreas Färber <afaerber@suse.de>