Enable per-procstate cpu usage tracking before for tests.

Enable the tracking so that BstatsCpuTimesValidationTest
will always run regardless of original tracking state on device.

Bug: 163674258
Test: atest core/tests/coretests/src/com/android/internal/os/BstatsCpuTimesValidationTest.java
Change-Id: Ide3881e6260375deafd098bc413a03df8f9e02a7
1 file changed