added dependencies to test scripts

Signed-off-by: Ben Taylor <ben.taylor@linaro.org>
diff --git a/tests/scripts/depends.py b/tests/scripts/depends.py
index 816d2de..5e025ba 100755
--- a/tests/scripts/depends.py
+++ b/tests/scripts/depends.py
@@ -350,6 +350,7 @@
                         'PSA_WANT_ALG_SHA3_256',
                         'PSA_WANT_ALG_SHA3_384',
                         'PSA_WANT_ALG_SHA3_512'],
+    'PSA_WANT_ALG_ECB_NO_PADDING' : ['MBEDTLS_NIST_KW_C'],
 }
 
 # If an option is tested in an exclusive test, alter the following defines.