Update location AppOp monitoring to respect settings.

If a provider is disabled, we don't mark an app as
actively using location just because it's requested
that provider.  Also updates the concept of high
power to support third party custom providers
(doesn't hard code gps but looks at the provider's
actual stated power requirement).

Change-Id: Ie01243bf04d7301962ea9cdb25fb7d8d97566e02