Merge branch 'bugfix/tw6904_mode_switch_cause_exception' into 'master'

esp32: fix tw6901



1. tw6904 - esp32 mode switch cause exception

2. tw8881 - set mac cause exception

3. Make pm_open/pm_shutdown thread-safe



See merge request !271

components/esp32/lib

@@ -1 +1 @@
-Subproject commit 3a412c08af1ace47a58d1f8722a8fed5b8d3b944
+Subproject commit 5902a2229e5371aeea45c09e63ea5e233b58750f

components/freertos/Kconfig

@@ -3,7 +3,7 @@ menu "FreeRTOS"
 # This is actually also handled in the ESP32 startup code, not only in FreeRTOS.
 config FREERTOS_UNICORE
     bool "Run FreeRTOS only on first core"
-    default n
+    default y
     help
         This version of FreeRTOS normally takes control of all cores of 
         the CPU. Select this if you only want to start it on the first core.