scripts: Add default rules for segmenting scripts. [2/2]

PD#SWPL-143301

Problem:
Compilation failure in the c3 project.

Solution:
add default rules for segmenting scripts.

Verify:
N/A

Change-Id: Ic3faa8e3943776afd2b3dad45f6523c8ea35f889
Signed-off-by: shijie.xiong <shijie.xiong@amlogic.com>
diff --git a/gen_scatter_lib.sh b/gen_scatter_lib.sh
index f79227a..89d54bf 100755
--- a/gen_scatter_lib.sh
+++ b/gen_scatter_lib.sh
@@ -140,6 +140,8 @@
 	rename_target_file_segment $1
 elif [ -d "$1" ]; then
 	search_and_process_specified_directory $1
+elif [ "$1" = "-empty" ]; then
+	echo "<---generate empty rule--->"
 else
 	show_help
 	exit 1