edk2-firmware: Move meta-oniro-staging bbappend to dynamic layers

Fixes building without meta-arm (e.g. meta-openharmony CI)

Signed-off-by: Bernhard Rosenkränzer <bernhard.rosenkraenzer.ext@huawei.com>

meta-oniro-staging/conf/layer.conf

@@ -19,6 +19,8 @@ BBFILES_DYNAMIC += "\
     intel:${LAYERDIR}/dynamic-layers/meta-intel/recipes-*/*/*.bbappend \
     meta-java:${LAYERDIR}/dynamic-layers/meta-java/recipes-*/*/*.bb \
     meta-java:${LAYERDIR}/dynamic-layers/meta-java/recipes-*/*/*.bbappend \
+    meta-arm:${LAYERDIR}/dynamic-layers/meta-arm/recipes-*/*/*.bb \
+    meta-arm:${LAYERDIR}/dynamic-layers/meta-arm/recipes-*/*/*.bbappend \
 "
 
 BBFILE_COLLECTIONS += "oniro-staging"