[NAN] Simplify printing (keeping track of) message types
am: 837a077af5

Change-Id: Ia1cfe762cac9c26591b6a6c70f2fc1a8af421b22
tree: bba274a699fa16e9864c8a7ac0fd73843100dd11
  1. libwifi_hal/
  2. libwifi_system/
  3. service/
  4. tests/