arm64: dts: rockchip: fix pcie-refclk frequency on rk3588 tiger

The clock-generator of course only produces a 100MHz clock rate,
not 1GHz.

Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
Reviewed-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Link: https://lore.kernel.org/r/20240423114635.2637310-1-heiko@sntech.de
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

Author: Heiko Stuebner

arch/arm64/boot/dts/rockchip/rk3588-tiger.dtsi

@@ -46,7 +46,7 @@
 	pcie_refclk_gen: pcie-refclk-gen-clock {
 		compatible = "fixed-clock";
 		#clock-cells = <0>;
-		clock-frequency = <1000000000>;
+		clock-frequency = <100000000>;
 	};
 
 	pcie_refclk: pcie-refclk-clock {