esp32s3/wifi: enable SMP by default on Wi-Fi-related defconfigs

In order to enhance the Wi-Fi performance, enable SMP by default to
make use of the dual-core functionality of the ESP32-S3.

Author: tmedicci

Documentation/platforms/xtensa/esp32s3/index.rst

@@ -127,7 +127,8 @@ Wi-Fi        Yes   WPA3-SAE supported
 Wi-Fi
 -----
 
-.. tip:: Boards usually expose a ``wifi`` defconfig which enables Wi-Fi
+.. tip:: Boards usually expose a ``wifi`` defconfig which enables Wi-Fi. On ESP32-S3,
+   SMP is enabled to enhance Wi-Fi performance.
 
 A standard network interface will be configured and can be initialized such as::
 
@@ -146,10 +147,10 @@ the result by running ``ifconfig`` afterwards.
 Wi-Fi SoftAP
 ------------
 
-It is possible to use ESP32 as an Access Point (SoftAP).
+It is possible to use ESP32-S3 as an Access Point (SoftAP).
 
 .. tip:: Boards usually expose a ``sta_softap`` defconfig which enables Wi-Fi
-   (STA + SoftAP)
+   (STA + SoftAP). On ESP32-S3, SMP is enabled to enhance Wi-Fi performance.
 
 If you are using this board config profile you can run these commands to be able
 to connect your smartphone or laptop to your board::

boards/xtensa/esp32s3/esp32s3-devkit/configs/sta_softap/defconfig

@@ -72,6 +72,8 @@ CONFIG_RR_INTERVAL=200
 CONFIG_SCHED_LPWORK=y
 CONFIG_SCHED_WAITPID=y
 CONFIG_SIG_DEFAULT=y
+CONFIG_SMP=y
+CONFIG_SMP_NCPUS=2
 CONFIG_SPIFFS_NAME_MAX=128
 CONFIG_START_DAY=6
 CONFIG_START_MONTH=12

boards/xtensa/esp32s3/esp32s3-devkit/configs/wifi/defconfig

@@ -68,6 +68,8 @@ CONFIG_RR_INTERVAL=200
 CONFIG_SCHED_LPWORK=y
 CONFIG_SCHED_WAITPID=y
 CONFIG_SIG_DEFAULT=y
+CONFIG_SMP=y
+CONFIG_SMP_NCPUS=2
 CONFIG_SPIFFS_NAME_MAX=128
 CONFIG_START_DAY=6
 CONFIG_START_MONTH=12