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_pkcs1_v21.function b/tests/suites/test_suite_pkcs1_v21.function
index bf99df6..5dfe5bb 100644
--- a/tests/suites/test_suite_pkcs1_v21.function
+++ b/tests/suites/test_suite_pkcs1_v21.function
@@ -42,7 +42,7 @@
                                           message_str->len, message_str->x,
                                           output) == result);
     if (result == 0) {
-        ASSERT_COMPARE(output, ctx.len, result_str->x, result_str->len);
+        TEST_BUFFERS_EQUAL(output, ctx.len, result_str->x, result_str->len);
     }
 
 exit:
@@ -98,7 +98,7 @@
                                               output,
                                               sizeof(output)) == result);
         if (result == 0) {
-            ASSERT_COMPARE(output, output_len, result_str->x, result_str->len);
+            TEST_BUFFERS_EQUAL(output, output_len, result_str->x, result_str->len);
         }
     }
 
@@ -154,7 +154,7 @@
                                            &info, MBEDTLS_RSA_PRIVATE, digest, 0,
                                            hash_result, output) == result);
         if (result == 0) {
-            ASSERT_COMPARE(output, ctx.len, result_str->x, result_str->len);
+            TEST_BUFFERS_EQUAL(output, ctx.len, result_str->x, result_str->len);
         }
 
         info.buf = rnd_buf->x;
@@ -165,7 +165,7 @@
                                                 &info, digest, 0, hash_result,
                                                 fixed_salt_length, output) == result);
     if (result == 0) {
-        ASSERT_COMPARE(output, ctx.len, result_str->x, result_str->len);
+        TEST_BUFFERS_EQUAL(output, ctx.len, result_str->x, result_str->len);
     }
 
 exit: