Bluetooth: Disable DUN profile

As DUN profile is not required. So Setting ro.bluetooth.dun
property value to 'false' for disabling DUN profile.

Change-Id: I853b3e247ccf5716e9b3b74ffc1cb86067db3151
CRs-Fixed: 590664
init.qcom.rc: remove set GID bit for /data/audio

Remove set GID bit for /data/audio for security reasons

Change-Id: I23f037e101dd4fc783761c8fc3f08f46de8733a5
CRs-Fixed: 578087
Merge "Bluetooth: Disable DUN profile"
ueventd.qcom.rc: Change hw_random permission to root

Change hw_random permission to root, higher the permission
higher is the device secure.

Change-Id: Ifca1f2e40a980444d64f38631dd9ea337701df62
Merge "init.qcom.rc: remove set GID bit for /data/audio"
Merge "ueventd.qcom.rc: Change hw_random permission to root"