Use local mSensors as index of mSensors list

The mDevicePosture was the index use for TriggerSensor[]
In this bug, the onTrigger(TriggerEvent event) has call to
corresponding TriggerSensor and local mSensors should
maping the index of mPosure.

Test: atest DozeSensorsTest
Bug: 203822366
Change-Id: I7baa1c8d971b2f0be78792810260859cd60f1fab
1 file changed