components/bt: Config BTU stack size by menuconifg

components/bt/Kconfig

@@ -182,6 +182,13 @@ config BTC_TASK_STACK_SIZE
     help
         This select btc task stack size
 
+config BTU_TASK_STACK_SIZE
+    int "Bluetooth Bluedroid Host Stack task stack size"
+    depends on BLUEDROID_ENABLED
+    default 4096
+    help
+        This select btu task stack size
+
 config BLUEDROID_MEM_DEBUG
     bool "Bluedroid memory debug"
     depends on BLUEDROID_ENABLED

components/bt/bluedroid/osi/include/osi/thread.h

@@ -72,7 +72,7 @@ typedef enum {
 #define HCI_H4_QUEUE_LEN                1
 
 #define BTU_TASK_PINNED_TO_CORE         (TASK_PINNED_TO_CORE)
-#define BTU_TASK_STACK_SIZE             (4096 + BT_TASK_EXTRA_STACK_SIZE)
+#define BTU_TASK_STACK_SIZE             (CONFIG_BTU_TASK_STACK_SIZE + BT_TASK_EXTRA_STACK_SIZE)
 #define BTU_TASK_PRIO                   (configMAX_PRIORITIES - 5)
 #define BTU_TASK_NAME                   "btuT"
 #define BTU_QUEUE_LEN                   50