1.Update the esp32 bt lib.The last update is still the old one,so update it again.

2.The controller may miss the sleep time caculated before. So it will stuck
  in the loop to get the deep sleep HW flag. Then the watchdog issue happen.

components/bt/controller/lib_esp32

@@ -1 +1 @@
-Subproject commit 66ecb769ecf2b11130319bf7a51846673359a952
+Subproject commit fb49791b7c1a8a35f06e68124c90022667b4cff1