dt-bindings: iio/magnetometer: yamaha,yas530: Fix invalid 'interrupts' in example

'interrupts' does not take a phandle, so remove it in the example.

Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20220106182518.1435497-4-robh@kernel.org