Show panels on lockscreen in expanded desktop mode.

Change-Id: Iaa2d712130707169c7a08156f8ea5afc247fc4cf

Conflicts:
	core/java/android/provider/Settings.java
	policy/src/com/android/internal/policy/impl/PhoneWindowManager.java

Conflicts:
	core/java/android/provider/Settings.java
	policy/src/com/android/internal/policy/impl/PhoneWindowManager.java