profcollectd: Add enabled flag

Disable profcollectd by default, unless turned on through device config.

This is controlled in the binder service, instead of scheduler, to
reduce the amount of code being used when the feature is off.

Test: flash device
Bug: 79161490
Change-Id: I612c81db6a33cbecc4205854b229235efb665e2b
5 files changed