[feature][T8TSK-68][sim]Sim card power management

Change-Id: I43ddcda71e010db41058f2f6796a7b4799f4bc3a
diff --git a/lib/liblynq-sim/include/lynq_sim.h b/lib/liblynq-sim/include/lynq_sim.h
index b0457df..923d03b 100755
--- a/lib/liblynq-sim/include/lynq_sim.h
+++ b/lib/liblynq-sim/include/lynq_sim.h
@@ -66,6 +66,12 @@
  */
 int lynq_get_version(char buf[]);
 
+/**
+ * @brief sim power on/off
+ * 
+ */
+int lynq_sim_power(int mode);
+
 
 
 #ifdef __cplusplus