Fix benchmark output label.

src/platform/vboot_reference/tests/kernel_verify_benchmark.c

Index: src/platform/vboot_reference/tests/kernel_verify_benchmark.c
diff --git a/src/platform/vboot_reference/tests/kernel_verify_benchmark.c b/src/platform/vboot_reference/tests/kernel_verify_benchmark.c
index 1460ef2e4de994ccc9f4f27eeab876f5b6933180..c3259fc5f96a0d386783ccb8ecccfc48237c8319 100644
--- a/src/platform/vboot_reference/tests/kernel_verify_benchmark.c
+++ b/src/platform/vboot_reference/tests/kernel_verify_benchmark.c
@@ -123,7 +123,7 @@ int SpeedTestAlgorithm(int firmware_sign_algorithm,
             algo_strings[firmware_sign_algorithm],
             algo_strings[kernel_sign_algorithm],
             msecs);
-    fprintf(stdout, "ms_firmware_%s_rsa%d_%s_rsa%d_%s:%.02f\n",
+    fprintf(stdout, "ms_kernel_%s_rsa%d_%s_rsa%d_%s:%.02f\n",
             g_kernel_size_labels[i],
             firmware_key_size,
             sha_strings[firmware_sign_algorithm],