[nrf52840] reinitialize all peripherals except uart for pseudo reset (#2878)

There are some problems if radio is not reinitialized during pseudo reset:
* It may trigger unexpected otPlatRadioTxDone(), and cause the device to hang;
* The uncleared radio timer queue is invalid, it may block the new added timer which has a larger targer time.

Note: The clock init/deinit is disabled during radio init/deinit.

third_party/NordicSemiconductor/drivers/radio/platform/clock/nrf_802154_clock_sdk.c

@@ -65,12 +65,12 @@ static void clock_handler(nrf_drv_clock_evt_type_t event)
 
 void nrf_802154_clock_init(void)
 {
-    nrf_drv_clock_init();
+    // Intentionally empty.
 }
 
 void nrf_802154_clock_deinit(void)
 {
-    nrf_drv_clock_uninit();
+    // Intentionally empty.
 }
 
 void nrf_802154_clock_hfclk_start(void)