HID: hid-sensor-custom: Allow more than one hinge angle sensor

Some devices has two sets of accelerometers and the sensor hub exports
two hinge angle 'sensors' based on accelerometer values. To allow more
than one sensor of the same type, use PLATFORM_DEVID_AUTO instead of
PLATFORM_DEVID_NONE when registering platform device for it.

Checked on the Lenovo Yoga Book YB1-X91L tablet.

Signed-off-by: Yauhen Kharuzhy <jekhor@gmail.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>