Arm backend: Add pytests time stats for unit test (pytorch#12110)

This will show time for all model tests and 10 slowest test for pytest
to avoid spamming as there are quite many tests.

cc @digantdesai @freddan80 @per @oscarandersson8218

Signed-off-by: Zingo Andersen <[email protected]>

Author: zingo

backends/arm/test/test_arm_baremetal.sh

@@ -82,7 +82,7 @@ test_pytest_ops() { # Test ops and other things
     backends/arm/scripts/build_executorch.sh
 
     # Run arm baremetal pytest tests without FVP
-    pytest  --verbose --color=yes --numprocesses=auto backends/arm/test/ --ignore=backends/arm/test/models
+    pytest  --verbose --color=yes --numprocesses=auto --durations=10 backends/arm/test/ --ignore=backends/arm/test/models
     echo "${TEST_SUITE_NAME}: PASS"
 }
 
@@ -98,7 +98,7 @@ test_pytest_models() { # Test ops and other things
     backends/arm/scripts/build_executorch.sh
 
     # Run arm baremetal pytest tests without FVP
-    pytest  --verbose --color=yes backends/arm/test/models
+    pytest  --verbose --color=yes --durations=0 backends/arm/test/models
     echo "${TEST_SUITE_NAME}: PASS"
 }
 
@@ -121,7 +121,7 @@ test_pytest_ops_ethosu_fvp() { # Same as test_pytest but also sometime verify us
     backends/arm/test/setup_testing.sh
 
     # Run arm baremetal pytest tests with FVP
-    pytest  --verbose --color=yes --numprocesses=auto backends/arm/test/ --ignore=backends/arm/test/models
+    pytest  --verbose --color=yes --numprocesses=auto --durations=10  backends/arm/test/ --ignore=backends/arm/test/models
     echo "${TEST_SUITE_NAME}: PASS"
 }
 
@@ -137,7 +137,7 @@ test_pytest_models_ethosu_fvp() { # Same as test_pytest but also sometime verify
     backends/arm/test/setup_testing.sh
 
     # Run arm baremetal pytest tests with FVP
-    pytest  --verbose --color=yes backends/arm/test/models
+    pytest  --verbose --color=yes --durations=0 backends/arm/test/models
     echo "${TEST_SUITE_NAME}: PASS"
 }