KeyguardViewMediator: Play lock screen sound sooner

When the screen is locked, there is a long pause before the lock
sound actually plays. This makes that sound happen much sooner.

Change-Id: I62547a183d68b93a33651c4078b5788d324055a9
CamcorderProfile: Add 4k timelapse encoder constants

 4k encoder constants during timelapse are added
 for the 4k timelapse use case.

CRs-Fixed: 642013
Change-Id: I901fa362242477dad84130d23055815cdfee6167