Fix: Network tiles for CDMA devices

PS 1: initial fix
PS 2: remove 3G Only for CDMA
PS 3: rebase for QS 3.0 changes

Change-Id: I2e526c8d94cc561c48c2a9198311e03b4f18328d

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