Rename Cortex Hercules Files to Cortex A78

This should allow git to easily track file moves

Signed-off-by: Jimmy Brisson <jimmy.brisson@arm.com>
Change-Id: I1592cf39a4f94209c560dc6d1a8bc1bfb21d8327
diff --git a/include/lib/cpus/aarch64/cortex_hercules_ae.h b/include/lib/cpus/aarch64/cortex_hercules_ae.h
index 795563b..73c22f7 100644
--- a/include/lib/cpus/aarch64/cortex_hercules_ae.h
+++ b/include/lib/cpus/aarch64/cortex_hercules_ae.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, ARM Limited. All rights reserved.
+ * Copyright (c) 2019-2020, ARM Limited. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -7,7 +7,7 @@
 #ifndef CORTEX_HERCULES_AE_H
 #define CORTEX_HERCULES_AE_H
 
-#include <cortex_hercules.h>
+#include <cortex_a78.h>
 
 #define CORTEX_HERCULES_AE_MIDR U(0x410FD420)