samples: tflite-micro: Use FVP for test validation

What is changed?
 - Updated the board qualifier for MPS3 to `mps3/corstone300/fvp`

Why do we need this change?
 - To validate the sample with FVP by default since QEMU doesn't
   model the NPU.

Signed-off-by: Sudan Landge <[email protected]>

Author: wearyzen

samples/modules/tflite-micro/hello_world/README.rst

@@ -65,7 +65,7 @@ the :envvar:`PATH` variable, then building and testing can be done with followin
 commands.
 
 ```
-$ west build -p auto -b mps3/corstone300/an547 samples/modules/tflite-micro/hello_world/ -T sample.tensorflow.helloworld.cmsis_nn
+$ west build -p auto -b mps3/corstone300/fvp samples/modules/tflite-micro/hello_world/ -T sample.tensorflow.helloworld.cmsis_nn
 $ FVP_Corstone_SSE-300_Ethos-U55 build/zephyr/zephyr.elf
 ```
 

samples/modules/tflite-micro/hello_world/sample.yaml

@@ -24,6 +24,6 @@ tests:
   sample.tensorflow.helloworld.cmsis_nn:
     tags: tensorflow
     platform_allow:
-      - mps3/corstone300/an547
+      - mps3/corstone300/fvp
     extra_configs:
       - CONFIG_TENSORFLOW_LITE_MICRO_CMSIS_NN_KERNELS=y

samples/modules/tflite-micro/tflm_ethosu/README.rst

@@ -43,5 +43,5 @@ commands.
 
 .. code-block:: bash
 
-    $ west build -b mps3/corstone300/an547 zephyr/samples/modules/tflite-micro/tflm_ethosu
+    $ west build -b mps3/corstone300/fvp zephyr/samples/modules/tflite-micro/tflm_ethosu
     $ FVP_Corstone_SSE-300_Ethos-U55 build/zephyr/zephyr.elf

samples/modules/tflite-micro/tflm_ethosu/sample.yaml

@@ -10,4 +10,4 @@ tests:
     filter: dt_compat_enabled("arm,ethos-u")
     build_only: true
     integration_platforms:
-      - mps3/corstone300/an547
+      - mps3/corstone300/fvp