问题描述：

Add btm_free() to clean up btm properly

解决方法：

vendor/qcom/opensource/commonsys/system/bt/stack/btm/btm_int.h

@@ -48,6 +48,7 @@ extern tBTM_CB btm_cb;
  *******************************************
 */
 extern void btm_init(void);
+extern void btm_free(void);
 
 /* Internal functions provided by btm_inq.cc
  ******************************************

vendor/qcom/opensource/commonsys/system/bt/stack/btm/btm_main.cc

@@ -87,3 +87,21 @@ void btm_init(void) {
 
   btm_dev_init(); /* Device Manager Structures & HCI_Reset */
 }
+
+/** This function is called to free dynamic memory and system resource allocated by btm_init */
+void btm_free(void) {
+  fixed_queue_free(btm_cb.page_queue, NULL);
+  btm_cb.page_queue = NULL;
+
+  fixed_queue_free(btm_cb.sec_pending_q, NULL);
+  btm_cb.sec_pending_q = NULL;
&#