arm64: dts: qcom: ipq8074: drop the clock-frequency property

Drop the clock-frequency property from the MMIO timer node, since it
is already configured by the bootloader.
Signed-off-by: NKathiravan T <quic_kathirav@quicinc.com>
Signed-off-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1643819709-5410-2-git-send-email-quic_kathirav@quicinc.com

arch/arm64/boot/dts/qcom/ipq8074.dtsi

@@ -670,7 +670,6 @@
 			ranges;
 			compatible = "arm,armv7-timer-mem";
 			reg = <0x0b120000 0x1000>;
-			clock-frequency = <19200000>;
 
 			frame@b120000 {
 				frame-number = <0>;