Merge cherrypicks of [2421170, 2421221, 2421107, 2421147] into nyc-mr2-security-b-release

Change-Id: I8e74b3cf2da6b8691505b03f4a55c9784c31c624
tree: b3561ed02ad12bf0177a707534a3bda6917ccef4
  1. Image.gz-dtb
  2. Image.gz-dtb-eas