优化demo代码解决NW部分参数处理错误

Change-Id: I4db3c717b535160ff7dc12bc9723d0d03ef303e8
diff --git a/mbtk/libmbtk_ril/mbtk_info.c b/mbtk/libmbtk_ril/mbtk_info.c
index 7627c08..d7ea54f 100755
--- a/mbtk/libmbtk_ril/mbtk_info.c
+++ b/mbtk/libmbtk_ril/mbtk_info.c
@@ -323,6 +323,9 @@
         // <uint8>  State
         case MBTK_INFO_ID_IND_SERVER_STATE_CHANGE:
             return "IND_SERVER_STATE";
+        // <uint8>  State
+        case MBTK_INFO_ID_IND_SIGNAL_STATE_CHANGE:
+            return "IND_SIGNAL_STATE";
         default:
         {
             return "UNKNOWN";