layer.conf: set high layer priority

Set a high layer prio to ensure that meta-raspberrypi addons
are always prioritized above the depended layers.

Signed-off-by: Petter Mabäcker <petter@technux.se>

conf/layer.conf

@@ -7,7 +7,7 @@ BBFILES += "${LAYERDIR}/recipes*/*/*.bb \
 
 BBFILE_COLLECTIONS += "raspberrypi"
 BBFILE_PATTERN_raspberrypi := "^${LAYERDIR}/"
-BBFILE_PRIORITY_raspberrypi = "6"
+BBFILE_PRIORITY_raspberrypi = "9"
 
 # Additional license directories.
 LICENSE_PATH += "${LAYERDIR}/files/custom-licenses"