Arm backend: Add pytests time stats for unit test

This will show time for all model tests but to avoid spamming only
show the 10 slowest ops tests.

Signed-off-by: Zingo Andersen <zingo.andersen@arm.com>
Change-Id: I95bd74932c69206b0579aeec0adb6f4c223b2e7a

Author: zingo

backends/arm/test/test_arm_baremetal.sh

@@ -77,7 +77,7 @@ 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"
 }
 
@@ -88,7 +88,7 @@ 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"
 }
 
@@ -109,7 +109,7 @@ 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"
 }
 
@@ -123,7 +123,7 @@ 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"
 }