9528bf6128
The code is easier to read if calling HIPActivityCallbackTracker
enable/disable_check directly. Both enable/disable_check return the
new mask, and the check whether a callback is already installed is
clearer.
Change-Id: Ic90d34489b5b4d9929dc08b4d9e93cc974b136b1
[ROCm/roctracer commit: f0e082feb1]