Code cleanup

Just to make it a little bit more presentable.

Signed-off-by: Patrick Bellasi <patrick.bellasi@arm.com>
Add GNU GPL licese

That should allow everyone to play with it.

Signed-off-by: Patrick Bellasi <patrick.bellasi@arm.com>
Dummy cross-compilation support

By default targeting ARM platforms.

Signed-off-by: Patrick Bellasi <patrick.bellasi@arm.com>