protodroid: cpu variant and mount_gpt in device init.rc
protodroid: add beagleboneblack-eng to lunch
protodroid: updating build product to be more minimal
protodroid: userdata img from 512MiB to 256MiB
Merge pull request #1 from chuckgo/protodroid-1.0.0__4.4.2_r2

Protodroid 1.0.0  4.4.2 r2