Parse boot properties from device tree

- Make sure compatible DT node is "android,firmware"
- Set ro.boot.* properties from firmware/android/ DT node

(cherry-pick of cbcbea27c70846a96f4bba2f7cb245f937de4d3f.)

Change-Id: If3d0716831516cb3d3fde1f75d57e2691d42d054
1 file changed