bpfprogs: Add a time_in_state program
am: c5c05168c8

Change-Id: I414633ae439443d3ec1c5ff623fd50d2f7e35490
tree: caa6100ad79042b5c4046881d35ab80c8dfcc5bb
  1. .clang-format
  2. Android.bp
  3. helpers.h
  4. time_in_state.c