p1c: 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

Change-Id: I4a0126a6d297f3c7c02f2bc61341dc5d60c83269
Signed-off-by: Humberto Borba <humberos@gmail.com>