Do double tap detection to wake up device while docked.

In order to keep the same action to wake up device when docked, it
should enable double tap sensor even though the setting is off.

The miss-touch can be ignored when docked.

Bug: 123057133
Test: atest SystemUITests
Change-Id: I67dec8b3ae51f46c50570eaec0250c1aa1dc8bb9