LED notification Bugfix

Change-Id: I244f806d925931f63bc69b6f941fe2df886f1986
Don't include flags in configuration change if their value hasn't changed.

This makes the check in updateFrom() match the logic in diff().

Change-Id: I3ab4e8460f7fbf985ef55b9514a8aa90d401d486
Frameworks: push recents preload time a bit up

seems to be that older hw key devices need a bit more
time to preload the recents because sometimes it ends
up in an empty recents screen. Time delay was
a bit to optimistic. Set it to android default
value for short press.

cheers

Change-Id: I40343a351ea968ae7dc663f2f36dbfef9dde93f5