Fix BT audio

Change-Id: I0e754880c3de179e5cbb726de8a4cc0dcc041e77
msm-7x27-common: restart adb on "adb root"

In commit e94d89243964e40eccf228d3da119f124ceb5d81,
this feature was removed mistakenly.

Change-Id: I89cd362791d756b866e0dd781ffc52032810d7bb