Import Humax upgrade support code

Build as libhmxupgrade.a
Humax provided no version number or tracking information. For future updates, we get to diff the files.

Change-Id: I6f82552a56c9e420a458c580b4097f4f8a5f5a57
13 files changed
tree: 73810fdd6b9ba193df3421a125cdf065603d3799
  1. libupgrade/
  2. makehdf