Unit test for 'abootimg' command. Right now it covers dtb/dtbo
functionality in Android Boot Image v2, which was added recently.
Running test:
$ ./test/py/test.py --bd sandbox --build -k test_abootimg
shows that 1/1 tests passes successfully.
Signed-off-by: Sam Protsenko <joe.skb7@gmail.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
