factory-4128: Update defaults to match kernel

Temporary hack to use default paths in 3.8 kernel

For factory branch only as pytest will be migrated to shortly

BUG=None
TEST=run light sensor test manually

Change-Id: Ia05d29dc6a6cf2038e8658ec41239e7425246da5
Reviewed-on: https://gerrit.chromium.org/gerrit/51440
Reviewed-by: Gediminas Ramanauskas <gedis@chromium.org>
Commit-Queue: Katie Roberts-Hoffman <katierh@chromium.org>
Tested-by: Katie Roberts-Hoffman <katierh@chromium.org>
diff --git a/client/site_tests/factory_LightSensor/factory_LightSensor.py b/client/site_tests/factory_LightSensor/factory_LightSensor.py
index 8f0ae51..fb5a3b5 100644
--- a/client/site_tests/factory_LightSensor/factory_LightSensor.py
+++ b/client/site_tests/factory_LightSensor/factory_LightSensor.py
@@ -39,13 +39,13 @@
     'Light sensor dark': 'Cover light sensor with finger',
     'Light sensor exact': 'Remove finger from light sensor',
     'Light sensor light': 'Shine light sensor with flashlight'}
-_DEFAULT_DEVICE_PATH='/sys/bus/iio/devices/iio:device0/'
+_DEFAULT_DEVICE_PATH='/sys/bus/iio/devices/iio:device1/'
 
 class iio_generic():
     '''
     Object to interface to ambient light sensor over iio.
     '''
-    PARAMS = {'rd': _DEFAULT_DEVICE_PATH + 'illuminance0_input',
+    PARAMS = {'rd': _DEFAULT_DEVICE_PATH + 'in_illuminance0_input',
               'range_setting': _DEFAULT_DEVICE_PATH + 'range',
               'init': '',
               'min': 0,