dt-bindings: pinctrl: mt8195: Use drive-strength-microamp in examples

The property mediatek,drive-strength-adv was deprecated: change the
example for i2c0-pins to use drive-strength-microamp.

Fixes: b6d9af2c6b69 ("dt-bindings: pinctrl: mt8195: Add and use drive-strength-microamp")
Signed-off-by: AngeloGioacchino Del Regno <[e-mail]>
Acked-by: Rob Herring <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Linus Walleij <[e-mail]>

Documentation/devicetree/bindings/pinctrl/pinctrl-mt8195.yaml

···
           pinmux = <PINMUX_GPIO8__FUNC_SDA0>,
                    <PINMUX_GPIO9__FUNC_SCL0>;
           bias-disable;
-          mediatek,drive-strength-adv = <7>;
+          drive-strength-microamp = <1000>;
         };
       };
     };