arm64: dts: qcom: sc8180x-lenovo-flex-5g: set touchpad i2c frequency to 1 MHz

This solves the issue when touchpad gets stuck on right or middle
click. This also makes touchpad working smoother.
Signed-off-by: Anton Bambura <jenneron@postmarketos.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240203191200.99185-6-jenneron@postmarketos.orgSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/sc8180x-lenovo-flex-5g.dts

@@ -375,7 +375,7 @@ touchscreen@10 {
 };
 
 &i2c7 {
-	clock-frequency = <100000>;
+	clock-frequency = <1000000>;
 
 	pinctrl-0 = <&i2c7_active>;
 	pinctrl-names = "default";