p1: fix artwork by using normal hdpi for now

system ui is not ready to 7" large hdpi resolution
so, set it as normal hdpi and fix system ui fc

* move to p1-common

Signed-off-by: Humberto Borba <humberos@gmail.com>
Change-Id: Ia39304718dae7508005f82c046f71a2966f15dbe