Fix build fails with non ECDSA / restartable builds

Signed-off-by: Paul Elliott <paul.elliott@arm.com>
diff --git a/tests/suites/test_suite_psa_crypto.function b/tests/suites/test_suite_psa_crypto.function
index a1b3c90..7ad8569 100644
--- a/tests/suites/test_suite_psa_crypto.function
+++ b/tests/suites/test_suite_psa_crypto.function
@@ -1220,6 +1220,10 @@
     INJECT_ANTICIPATE_KEY_DERIVATION_2,
 } ecjpake_injected_failure_t;
 
+#if (defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \
+    defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)) && \
+    defined(MBEDTLS_ECP_RESTARTABLE)
+
 static void interruptible_signverify_get_minmax_completes(uint32_t max_ops,
                                                           psa_status_t expected_status,
                                                           size_t *min_completes,
@@ -1244,6 +1248,9 @@
         *max_completes = 1;
     }
 }
+#endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) ||
+        * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) &&
+        * defined( MBEDTLS_ECP_RESTARTABLE ) */
 
 /* END_HEADER */