SystemUI: Properly dim clock/centered clock on low profile

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java

Change-Id: I2a9bbc1b8a7c9681cdbbfb6a9937a54ad8e307f8

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java