scripts/image: support EXTRA_CMDLINE in noobs image creation

Signed-off-by: Matthias Reichl <hias@horus.com>

scripts/image

@@ -407,6 +407,9 @@ if [ "${1}" = "release" -o "${1}" = "mkimage" -o "${1}" = "noobs" ]; then
         -e "s%@SYSTEM_SIZE@%${SYSTEM_SIZE}%g" \
         -i ${RELEASE_DIR}/${NOOBS_DISTRO}/partitions.json
 
+    sed -e "s%@EXTRA_CMDLINE@%${EXTRA_CMDLINE}%g" \
+        -i ${RELEASE_DIR}/${NOOBS_DISTRO}/partition_setup.sh
+
     # Create System dir
     mkdir -p ${RELEASE_DIR}/${NOOBS_DISTRO}/System