p1ln: 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: I1e11bfb269da8f25ac2034dc9dffb17a766af1bf