ad113c487e
Remove _downstream, _mainline in deviceinfo as there is only the
mainline kernel now. Fixup taken from a comment by Richard Qian in the
initial device port merge request. I've verified that the device package
builds. [ci:skip-build]
Fixes: 949effc0 ("acer-picasso: new device (Acer Iconia Tab A500) (MR 1308)")