SystemUI: Update WiFi indicator drawable sizes

Resize both the activity arrows and the signal strength indicators so
that both are properly centered and overlay correctly for all screen
densities.

Change-Id: I7e95adcdc110995504534a58eb0df42ba132bc97
Bluetooth-Wipower: Enable dynamic logging for A4WP

This helps to enable wipower dynamic parameters intercepted
at host to be logged via adb/command line.

Change-Id: Ibd79f4d56c99a43eab1146f4ae20155ac439cd8f
CRs=fixed: 754356