SystemUI: fix nav bar arrow keys for RTL locales

Change-Id: I567636ab0beff3ad6e12c8552cf0d1447d7bc288
Signed-off-by: Roman Birg <roman@cyngn.com>
ProximitySensor: check for correct MaxRange value

Use TYPICAL_PROXIMITY_THRESHOLD for devices that returns incorrect mProximitySensor.getMaximumRange() value;

Presto's proximity sensor returns values: 0.0f(near) or 5.0f(far).
mProximitySensor.getMaximumRange() must return proximity sensor's availible range, but it always return 0, so mProximityThreshold is also 0.

So boolean positive = distance >= 0.0f && distance < mProximityThreshold;  positive will never be
true.
The cause of this problem is proprietary sensor.msm8660.so, it must set proper Range and Resolution for proximity sensor.

Change-Id: I0cf81fd20f210115cbd6db10c0070b12f1c57336