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
base: Volume button wake: simplify logic
Remove lockscreen slide delay option (2/2)

Also enable this option for insecure lockscreen:
* Power button instantly locks

Change-Id: Ibf93519637e0c08bad5d2224c3f76c99b0af60f7

Conflicts:
	core/java/android/provider/Settings.java