Telephony: fix tdsdma asu invalid value

The magic value for invalid asu is "99", not "255". This error is causing the value validity checks to fail incorrectly, fixit.

Change-Id: Ief816eb577ccf371b3c85df1fe9515eb0bfb3f06
MSimNetworkController: Quiet logspam

* Most uses of Slog.d are not protected by the if (DEBUG) they should
  be. Make it so.

Change-Id: I36151113b1bfcdbe84c27abf39918441e23a8e88
Fix camera usage tracking.

When a Camera object is finalized, it notifies the torch service that
it's no longer using the camera. This call used to not check whether the
caller actually is still using the camera and called release() before,
so depending on timing of the finalizer, it could happen that e.g. the
camera app released the camera user record of the torch app, leading to
the torch usage not being detected on next usage of the camera app.

Fix that by checking whether the caller of onCameraClosed() actually
owned the camera prior to releasing the record.
Also fix synchronization between accesses.

Change-Id: Ic01cbc3c89ab8d855e4613bfa1b2f548de919b73