Updating Security Patch String to: 2016-03-18 - March 2016 OTA v2 am: 7a498ba am: cdbccfd
am: 5b24724

* commit '5b24724ccf81ebbcfd20cebcb9f024c8fed3b5f2':
  Updating Security Patch String to: 2016-03-18 - March 2016 OTA v2