For tests, rename ASSERT_COMPARE() to TEST_BUFFERS_EQUAL()

Signed-off-by: Tom Cosgrove <tom.cosgrove@arm.com>
diff --git a/tests/suites/test_suite_hkdf.function b/tests/suites/test_suite_hkdf.function
index 2bfbf3c..f52108e 100644
--- a/tests/suites/test_suite_hkdf.function
+++ b/tests/suites/test_suite_hkdf.function
@@ -24,7 +24,7 @@
                        info->x, info->len, okm, expected_okm->len);
     TEST_ASSERT(ret == 0);
 
-    ASSERT_COMPARE(okm, expected_okm->len,
+    TEST_BUFFERS_EQUAL(okm, expected_okm->len,
                    expected_okm->x, expected_okm->len);
 }
 /* END_CASE */
@@ -53,7 +53,7 @@
     ret = mbedtls_hkdf_extract(md, salt, salt_len, ikm, ikm_len, output_prk);
     TEST_ASSERT(ret == 0);
 
-    ASSERT_COMPARE(output_prk, output_prk_len, prk, prk_len);
+    TEST_BUFFERS_EQUAL(output_prk, output_prk_len, prk, prk_len);
 
 exit:
     mbedtls_free(ikm);
@@ -89,7 +89,7 @@
     ret = mbedtls_hkdf_expand(md, prk, prk_len, info, info_len,
                               output_okm, OKM_LEN);
     TEST_ASSERT(ret == 0);
-    ASSERT_COMPARE(output_okm, okm_len, okm, okm_len);
+    TEST_BUFFERS_EQUAL(output_okm, okm_len, okm, okm_len);
 
 exit:
     mbedtls_free(info);