atrace: make cpu freq governor tracing optional

This change allows atrace to run on kernels that do not have CPU frequency
interactive governor tracing enabled in the kernel.

Change-Id: Ibfde751da7b6cc9a55794355093a37feb28f5e52
1 file changed
tree: ee6f6ac0055a8c4ecfceb51a702a0811977bd3cc
  1. cmds/