Merge tag 'sprd-dt-6.8-rc1' of https://github.com/lyrazhang/linux into soc/dt

Merge tag 'sprd-dt-6.8-rc1' of https://github.com/lyrazhang/linux into soc/dt

ARM: sprd: DTS and bindings for v6.8-rc1

Unisoc ARM64 DTS and bindings changes are:
- Fixed a few dtb_check warnings
- Add bindings for a new SoC - UMS9620
- Fixed an issue on UMS512

* tag 'sprd-dt-6.8-rc1' of https://github.com/lyrazhang/linux:
  arm64: dts: sprd: Change UMS512 idle-state nodename to match bindings
  arm64: dts: sprd: Add clock reference for pll2 on UMS512
  arm64: dts: sprd: Removed unused clock references from etm nodes
  arm64: dts: sprd: Add support for Unisoc's UMS9620
  dt-bindings: arm: Add compatible strings for Unisoc's UMS9620
  arm64: dts: sprd: fix the cpu node for UMS512

Link: https://lore.kernel.org/r/20231228084958.1439115-1-chunyan.zhang@unisoc.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>