Adding the Xperia V (tsubasa) to PACman soures.

including a fix for hayabusa and a little cleansing of
vendorsetup.sh

patch set 2:
Also fixing pa overlay with common device overlays for sony blue
board phones (all have 720p / xhdpi) (mint, hayabusa, tsubasa)

patch set 3: derp.

Cheers,
djpbx

Change-Id: I77929899b1325f2f7a3560ab5f37ae6c3a576225