Add support for nvidia shieldtablet (wifi only)

Change-Id: Iea95fe8eb892cfd566b413be3d107f2c68cb51e7
Add APN for Tele2 4G

Change-Id: I081867e026fa8a406b99c6ad802a16bd30896cf0
vendor: Cleanup configuration for shieldtablet

There's no need to redifine product here only the name
Allow nvidia apps
Enable drm service
Remove non-existing overkay

Change-Id: Ie1d64c500076a509a17a496977c5cc3604794223
klte deunification

Change-Id: Iaee6fa83810e5614f1a0aba7163cf6828ae03c10
Merge "vendor: Cleanup configuration for shieldtablet" into kk44
kltevzw is no longer unified

Change-Id: I6907b665024788494ff3d4d4d752b18cbd7f3926