maguro: Correct bluetooth device name

This commit changes the device name from what is reflected
in AOSP (Galaxy Nexus 2) to a more appropriate name (Galaxy Nexus).
This will correct the name in the Bluetooth pane in Settings.

Change-Id: Ib41a69430bc974367cbe7f4514be3619cf2093d6
Merge branch 'cm-10.1' into martincz