ARM/dts: Set ref clock to 24MHz for msm8974

Set ref clock rate to 24MHz for 8974 platform for ref clock
based SOF/ITP generation. Otherwise enumeration of peripherals
will fail.

Change-Id: I8425e82f5ceaf3a8bcb4a5d1a3ccc7954e44d752
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>
diff --git a/arch/arm/boot/dts/msm8974pro-pm8941.dtsi b/arch/arm/boot/dts/msm8974pro-pm8941.dtsi
index 9c2be1a..89939e6 100644
--- a/arch/arm/boot/dts/msm8974pro-pm8941.dtsi
+++ b/arch/arm/boot/dts/msm8974pro-pm8941.dtsi
@@ -68,6 +68,7 @@
 
 &usb3 {
 	qcom,usbin-vadc = <&pm8941_vadc>;
+	qcom,utmi-clk-rate = <24000000>;
 };
 
 &krait_regulator_pmic {