arm64: zynqmp: Fix sgmii clock input freq for p-a2197

Input frequency for sgmii is 125MHz on all Xilinx designs.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/87153c59cc526f5955b3bff3db11027b5848c042.1634302099.git.michal.simek@xilinx.com
diff --git a/arch/arm/dts/zynqmp-p-a2197-00-revA.dts b/arch/arm/dts/zynqmp-p-a2197-00-revA.dts
index c893aaa..5d21795 100644
--- a/arch/arm/dts/zynqmp-p-a2197-00-revA.dts
+++ b/arch/arm/dts/zynqmp-p-a2197-00-revA.dts
@@ -46,7 +46,7 @@
 	si5332_1: si5332_1 { /* clk0_sgmii - u142 */
 		compatible = "fixed-clock";
 		#clock-cells = <0>;
-		clock-frequency = <33333333>; /* FIXME */
+		clock-frequency = <125000000>;
 	};
 
 	si5332_2: si5332_2 { /* clk1_usb - u142 */