rockchip64-7.1: Enable 1 GHz frequency for Panthor (from Kwiboo)

- `git fetch https://github.com/Kwiboo/linux-rockchip.git next-20260619-rk35xx-scmi-gpu-clk:kwiboo-next-20260619-rk35xx-scmi-gpu-clk`
- `git format-patch 3ce97bd3c4f18608335e709c24d6a40e7036cab8..kwiboo-next-20260619-rk35xx-scmi-gpu-clk--for-armbian-20260628 --stdout`
- rewritten

Author: ginkage