iio: mma8452: Add support for the "mount-matrix" device property

Add support for the standard "mount-matrix" device property to
the mma8452 driver.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20220208124336.511884-2-hdegoede@redhat.com


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