fb: animate carrier lable when collapsing notification drawer

like we do for shortcuts....does not look well that this is the only
part which does not animate. IMO google behaviour is not the best
here

Change-Id: I8bcb462774703addce4760aefabe4232eeea438c

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