tests: boards: espressif: add esp32s3 to cache coex test

Test esp32s3 for cache coexistence. Update test documentation.

Signed-off-by: Lucas Tamborrino <lucas.tamborrino@espressif.com>

tests/boards/espressif_esp32/cache_coex/README.rst

@@ -12,32 +12,44 @@ with a random generated pattern. At the same time, a whole SPI Flash page is upd
 value. By the end of the thread iterations, both PSRAM and SPI Flash have its contents compared against
 expected values to check for integrity.
 
+Supported Boards
+****************
+- esp32_devkitc_wrover
+- esp32s2_saola
+- esp32s3_devkitm
+
 Building and Running
 ********************
 
-Make sure you have the ESP32 DevKitC connected over USB port.
+Make sure you have the target connected over USB port.
 
 .. code-block:: console
 
-   west build -b esp32_devkitc_wrover tests/boards/espressif_esp32/cache_coex
-   west flash --esp-device /dev/ttyUSB0
+   west build -b <board> tests/boards/espressif_esp32/cache_coex
+   west flash && west espressif monitor
 
 Sample Output
 =============
 
-To check output of this test, any serial console program can be used (i.e. on Linux picocom, putty, screen, etc).
-This test uses ``minicom`` on the serial port ``/dev/ttyUS0``. The following lines indicate a successful test:
-
 .. code-block:: console
 
-    Running test suite cache_coex_test
-    ===================================================================
-    START - flash_integrity_test
-     PASS - flash_integrity_test in 0.1 seconds
-    ===================================================================
-    START - ram_integrity_test
-     PASS - ram_integrity_test in 0.1 seconds
-    ===================================================================
-    Test suite cache_coex_test succeeded
-    ===================================================================
-    PROJECT EXECUTION SUCCESSFUL
+	Running TESTSUITE cache_coex
+	===================================================================
+	START - test_flash_integrity
+	PASS - test_flash_integrity in 0.001 seconds
+	===================================================================
+	START - test_ram_integrity
+	PASS - test_ram_integrity in 0.001 seconds
+	===================================================================
+	START - test_using_spiram
+	PASS - test_using_spiram in 0.001 seconds
+	===================================================================
+	TESTSUITE cache_coex succeeded
+	------ TESTSUITE SUMMARY START ------
+	SUITE PASS - 100.00% [cache_coex]: pass = 3, fail = 0, skip = 0, total = 3 duration = 0.003 seconds
+	- PASS - [cache_coex.test_flash_integrity] duration = 0.001 seconds
+	- PASS - [cache_coex.test_ram_integrity] duration = 0.001 seconds
+	- PASS - [cache_coex.test_using_spiram] duration = 0.001 seconds
+	------ TESTSUITE SUMMARY END ------
+	===================================================================
+	PROJECT EXECUTION SUCCESSFUL

tests/boards/espressif_esp32/cache_coex/testcase.yaml

@@ -1,6 +1,9 @@
 tests:
   boards.esp32.cache_coex:
-    platform_allow: esp32_devkitc_wrover esp32s2_saola
+    platform_allow:
+      - esp32_devkitc_wrover
+      - esp32s2_saola
+      - esp32s3_devkitm
     tags:
       - spiram
       - spiflash