am e0890ff4: Explain the bytes associated with the NFC type 4 tag.

Merge commit 'e0890ff4bc95c63104a00df66f69b0ccd7ed15d7' into gingerbread-plus-aosp

* commit 'e0890ff4bc95c63104a00df66f69b0ccd7ed15d7':
  Explain the bytes associated with the NFC type 4 tag.