Add an ethernet network icon to the statusbar network area. Merge of r44948 into cm-11.0 with updated icons.

Change-Id: If1f0c3122f634154afde8529ded167ab2eb2644f

Conflicts:

	packages/SystemUI/src/com/android/systemui/statusbar/SignalClusterView.java
	packages/SystemUI/src/com/android/systemui/statusbar/policy/NetworkController.java