keyguard: force marquee effect for carrier text

This allows to make rooms for languages with long carrier text descriptions.

Change-Id: I8a3f69d186e79971c66c4977d258b2bda48ceeff
JIRA: CYAN-4356
Issue: https://jira.cyanogenmod.org/browse/CYAN-4356
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
Wifi: Use bss->age identifier for wifi scan results. This value will be used as "timestamp" and Google Play Services uses this value for identifying sane wifi scan items.

The current timestamp (tsf=) has a different meaning, which causes the
Google Location Resolver to ignore all wifi scan entries and therefore
no location can be resolved.

This solution is already done on batched result parsing, but missing on the traditional scans.

Change-Id: I36a1aeb666379e6a010298f09161e971012db83f