arm64: dts: rockchip: Add missing uart3 interrupt for RK3528

The interrupt of uart3 node on rk3528 is missing, fix it.

Fixes: 7983e6c3 ("arm64: dts: rockchip: Add base DT for rk3528 SoC")
Reviewed-by: Yao Zi <ziyao@disroot.org>
Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
Link: https://lore.kernel.org/r/20250401100020.944658-2-amadeus@jmu.edu.cn


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