tuna: Align with new extract-files

Since tuna devices are no longer maintained by AOSP there is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/$(DEVICE).

Exisiting local manifests will still work as all tuna devices
pull vendor/samsung. It will no longer be need to include
vendor/(broadcom,imgtec,invensense,nxp,widevine) when building
for tuna devices although the existence will not conflict.

Change-Id: I10f5bc1ca9d3b566312c266ec534c5d5ac45957a
Merge pull request #359 from dhacker29/cm-11.0

tuna: Align with new extract-files
add Stweaks