For tests, rename TEST_BUFFERS_EQUAL() to TEST_MEMORY_COMPARE()

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 9875180..6261979 100644
--- a/tests/suites/test_suite_pkcs1_v21.function
+++ b/tests/suites/test_suite_pkcs1_v21.function
@@ -48,7 +48,7 @@
                                           message_str->x,
                                           output) == result);
     if (result == 0) {
-        TEST_BUFFERS_EQUAL(output, ctx.len, result_str->x, result_str->len);
+        TEST_MEMORY_COMPARE(output, ctx.len, result_str->x, result_str->len);
     }
 
 exit:
@@ -110,7 +110,7 @@
                                               output,
                                               sizeof(output)) == result);
         if (result == 0) {
-            TEST_BUFFERS_EQUAL(output, output_len, result_str->x, result_str->len);
+            TEST_MEMORY_COMPARE(output, output_len, result_str->x, result_str->len);
         }
     }
 
@@ -167,7 +167,7 @@
                         &ctx, &mbedtls_test_rnd_buffer_rand, &info,
                         digest, hash_digest->len, hash_digest->x, output) == result);
         if (result == 0) {
-            TEST_BUFFERS_EQUAL(output, ctx.len, result_str->x, result_str->len);
+            TEST_MEMORY_COMPARE(output, ctx.len, result_str->x, result_str->len);
         }
 
         info.buf = rnd_buf->x;
@@ -179,7 +179,7 @@
                     digest, hash_digest->len, hash_digest->x,
                     fixed_salt_length, output) == result);
     if (result == 0) {
-        TEST_BUFFERS_EQUAL(output, ctx.len, result_str->x, result_str->len);
+        TEST_MEMORY_COMPARE(output, ctx.len, result_str->x, result_str->len);
     }
 
 exit: