dt-bindings: i2c: sun6i-p2wi: Fix the binding example

Even though the binding claims that the frequency can go up to 6MHz, the
common i2c binding sets a limit at 3MHz, which then triggers a warning.

Since the only SoC that uses that bus uses a frequency of 100kHz, and that
this bus hasn't been found in an SoC for something like 5 years, let's just
fix the example to have a frequency within the acceptable range for i2c.
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

Documentation/devicetree/bindings/i2c/allwinner,sun6i-a31-p2wi.yaml

@@ -51,7 +51,7 @@ examples:
         reg = <0x01f03400 0x400>;
         interrupts = <0 39 4>;
         clocks = <&apb0_gates 3>;
-        clock-frequency = <6000000>;
+        clock-frequency = <100000>;
         resets = <&apb0_rst 3>;
         #address-cells = <1>;
         #size-cells = <0>;