psplash: Let distro override the default splash image if it provides
psplash: Let distro override the default splash image if it provides

BSPs should not be overriding the distro splash images, here we
reduce the priority of psplash-raspberrypi below 100 so the defaults
from distros can kick in.

Signed-off-by: Khem Raj <729d64b6f67515e258459a5f6d20ec88b2caf8df@gmail.com>

d21d3q/meta-raspberrypi,kraj/meta-raspberrypi,agherzan/meta-raspberrypi,d21d3q/meta-raspberrypi,leon-anavi/meta-raspberrypi,agherzan/meta-raspberrypi,schnitzeltony/meta-raspberrypi,leon-anavi/meta-raspberrypi,kraj/meta-raspberrypi,LocutusOfBorg/meta-raspberrypi,LocutusOfBorg/meta-raspberrypi,agherzan/meta-raspberrypi,d21d3q/meta-raspberrypi,kraj/meta-raspberrypi,schnitzeltony/meta-raspberrypi,LocutusOfBorg/meta-raspberrypi,d21d3q/meta-raspberrypi,LocutusOfBorg/meta-raspberrypi,agherzan/meta-raspberrypi,agherzan/meta-raspberrypi,agherzan/meta-raspberrypi,leon-anavi/meta-raspberrypi,schnitzeltony/meta-raspberrypi