[maguro][bluetooth] Unblock bluetooth and upload the firmware in parallel with droid-hal-init starting

An rfkill package can be pulled from: https://github.com/beidl/rfkill

Change-Id: I5c6eb6aac1246902c4e67bfab0e9a67c376086d7
[maguro][platform] Get rid of service file for symlink creation and modify the udev platform-device script

udev creates symlinks relative to / instead of /dev, so force the correct symlinking inside of the script

Change-Id: I98d04b297b4193aa5b42376d124b7bf18215364d
[maguro][patterns] Additional apps and packages on the default maguro build

Change-Id: Ic541ed393662014a8b646f51e891df19ddcb61c3
[maguro][patterns] Add link to my rfkill fork on Github

Change-Id: I84f8216c801e0fcec45359f961b509756229a9a9