pinctrl: apple: Add "apple,t8103-pinctrl" as compatible

After discussion with the devicetree maintainers we agreed to not extend
lists with the generic compatible "apple,pinctrl" anymore [1]. Use
"apple,t8103-pinctrl" as fallback compatible as it is the SoC the driver
and bindings were written for.

[1]: https://lore.kernel.org/asahi/12ab93b7-1fc2-4ce0-926e-c8141cfe81bf@kernel.org/

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Signed-off-by: Janne Grunau <j@jannau.net>

drivers/pinctrl/pinctrl-apple-gpio.c

@@ -515,6 +515,7 @@ static int apple_gpio_pinctrl_probe(struct platform_device *pdev)
 }
 
 static const struct of_device_id apple_gpio_pinctrl_of_match[] = {
+	{ .compatible = "apple,t8103-pinctrl", },
 	{ .compatible = "apple,pinctrl", },
 	{ }
 };