Setup common tuna extract-files/remove Google self-extractors

Since tuna devices are no longer maintained by AOSP there is
no need to have multiple locations and duplicate files. This
Will put all common files in vendor/samsung/tuna and device
specific ones in vendor/samsung/maguro.

Change-Id: If4fc5688c82da031993b49a6f74807f31df21a1d
maguro: update fingerprint to JWR66Y

- Lastest official build fingerprint

Change-Id: I262c83b9b563de02c7ae24e2a722d299bf67dd76
Merge "Setup common tuna extract-files/remove Google self-extractors" into cm-11.0
Merge remote-tracking branch 'github/cm-11.0' into cm11