Also add unpack_bootimg and update mkbootimg
AOSP 96fd8874ef8e ("Check DTB image size for boot image header version 2 and above")
Change-Id: I4582913b21f711c84d62bed0ffd024b583a094f7
Signed-off-by: Tao Huang <huangtao@rock-chips.com>
From AOSP 294eb9dac3c0 ("mkbootimg: use int for os_version and os_patch_level")
Change-Id: I5026049859df121d0a034085c2563cfc4ef98230
Signed-off-by: Tao Huang <huangtao@rock-chips.com>