arm64: dts: rockchip: Add cd-gpios for sdcard detect on Cool Pi 4B

cd-gpios is used for sdcard detects for sdmmc.

Fixes: 3f5d336d ("arm64: dts: rockchip: Add support for rk3588s based board Cool Pi 4B")
Signed-off-by: Andy Yan <andyshrk@163.com>
Link: https://lore.kernel.org/r/20250524064223.5741-2-andyshrk@163.com


Signed-off-by: Heiko Stuebner <heiko@sntech.de>