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_chacha20.function b/tests/suites/test_suite_chacha20.function
index 1838cdc..a638213 100644
--- a/tests/suites/test_suite_chacha20.function
+++ b/tests/suites/test_suite_chacha20.function
@@ -29,7 +29,7 @@
     TEST_ASSERT(mbedtls_chacha20_crypt(key_str->x, nonce_str->x, counter, src_str->len, src_str->x,
                                        output) == 0);
 
-    TEST_BUFFERS_EQUAL(output, expected_output_str->len,
+    TEST_MEMORY_COMPARE(output, expected_output_str->len,
                    expected_output_str->x, expected_output_str->len);
 
     /*
@@ -44,7 +44,7 @@
     memset(output, 0x00, sizeof(output));
     TEST_ASSERT(mbedtls_chacha20_update(&ctx, src_str->len, src_str->x, output) == 0);
 
-    TEST_BUFFERS_EQUAL(output, expected_output_str->len,
+    TEST_MEMORY_COMPARE(output, expected_output_str->len,
                    expected_output_str->x, expected_output_str->len);
 
     /*
@@ -60,7 +60,7 @@
     TEST_ASSERT(mbedtls_chacha20_update(&ctx, src_str->len - 1,
                                         src_str->x + 1, output + 1) == 0);
 
-    TEST_BUFFERS_EQUAL(output, expected_output_str->len,
+    TEST_MEMORY_COMPARE(output, expected_output_str->len,
                    expected_output_str->x, expected_output_str->len);
 
     mbedtls_chacha20_free(&ctx);