Merge cherrypicks of [2367012, 2367144, 2367013] into nyc-mr2-security-b-release

Change-Id: I7c4e7409d9431523bbb742c6dd4285f3d7e20b8e
tree: 230ec2184b5fe2f038a6ac643245825c26916634
  1. bcmdhd/
  2. .gitignore
  3. CleanSpec.mk