iio: dac: mcp4725: Use of_property_present() for non-boolean properties

The use of of_property_read_bool() for non-boolean properties is
deprecated in favor of of_property_present() when testing for property
presence.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20241104190846.278417-1-robh@kernel.org


Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>