psplash: Configure another package for the oniro splash

This being a separate package, SPLASH can be used to switch to the
preferred one. The distro can set the default one for oniro. In this
way, the oniro splash configuration is going to play nicely with other
splash configurations external layers might bring (see
meta-raspberrypi).

Signed-off-by: Andrei Gherzan <andrei.gherzan@huawei.com>

assets/psplash-oniro-img.png

+oniro-logo-small.png
\ No newline at end of file

meta-oniro-core/recipes-core/psplash/psplash_%.bbappend

@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
 FILESEXTRAPATHS_prepend := "${ONIRO_COREBASE}/assets:"
-SPLASH_IMAGES = "file://oniro-logo-small.png;outsuffix=default"
+SPLASH_IMAGES_append = " file://psplash-oniro-img.png;outsuffix=oniro"
 
 EXTRA_OECONF += "--enable-img-fullscreen --disable-startup-msg --disable-progress-bar"