cmake: Place the bbappend only for dora builds

Not sure if they are needed for pyro but this layer will be rarely
used with pyro but need to continue to work for dora. This could
work.

conf/layer.conf

@@ -14,6 +14,11 @@ BBPATH .= ":${LAYERDIR}"
 # We have a recipes directory, add to BBFILES
 BBFILES += "${LAYERDIR}/recipes-*/*/*.bb ${LAYERDIR}/recipes-*/*/*.bbappend"
 
+# Add hacks for dora or master..
+BBFILES_META_QT5 = "${LAYERDIR}/yocto-${@dict([('1.5', 'dora')]).get(d.getVar('DISTRO_VERSION', True)[0:3],'master')}/*.bbappend"
+BBFILES +=  "{BBFILES_META_QT5}"
+
+
 BBFILE_COLLECTIONS += "qt5-layer"
 BBFILE_PATTERN_qt5-layer := "^${LAYERDIR}/"