samples: espressif: spiram_test: add ESP32-S3 test entries

Add test entries for ESP32-S3 default SPIRAM and octal
80 MHz configurations. Move harness config to common
section to avoid duplication.

Signed-off-by: Sylvio Alves <sylvio.alves@espressif.com>

Author: sylvioalves

samples/boards/espressif/spiram_test/sample.yaml

@@ -1,13 +1,23 @@
 sample:
   description: Application to test memory allocation from SPIRAM
   name: spiram_test
+common:
+  harness: console
+  harness_config:
+    type: multi_line
+    regex:
+      - "SPIRAM mem test pass"
+      - "Internal mem test pass"
 tests:
   sample.board.esp32.spiram:
     platform_allow: esp32_devkitc/esp32/procpu
     tags: esp32
-    harness: console
-    harness_config:
-      type: multi_line
-      regex:
-        - "SPIRAM mem test pass"
-        - "Internal mem test pass"
+  sample.board.esp32s3.spiram:
+    platform_allow: esp32s3_devkitc/esp32s3/procpu
+    tags: esp32s3
+  sample.board.esp32s3.spiram.octal_80m:
+    platform_allow: esp32s3_devkitc/esp32s3/procpu
+    tags: esp32s3
+    extra_configs:
+      - CONFIG_SPIRAM_SPEED_80M=y
+      - CONFIG_SPIRAM_MODE_OCT=y