Statsd atom: interactive

Add atom for when the device changes its interactive state (according to
the PowerManager).

Bug: 115554803
Test: manual confirmation
Change-Id: I2ebed1ee32725b3fcb3308f8e9472c9534222451
1 file changed
tree: d58fe66e4165d4d2501fc3590952c85fad7e9500
  1. stats/