g2: Introduce common folder

I'm splitting it up now because git, being the stupid thing it is,
keeps changing what files are renamed to make the g2-common folder.
I need it to be the d802 folder that gets renamed, so I'll commit
again to remove the f320, ls980, and vs980 folders

Change-Id: I58954798d6f2b4e6593e013cc6c545d259c7efe2
Remove f320, ls980, and vs980 common blobs (moved to g2-common)

Change-Id: I1603b9d19880aef2ef1d9ceede818608ea30cbdd