Update the ARM trusted firmware git URL

The primary upstream URL for tf-a has moved, in some cases
things like tags are not always pushed to the old URL so
update the URLs to the primary upstream project URL.

Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
diff --git a/include/atf_common.h b/include/atf_common.h
index 5ae4509..03cfcc6 100644
--- a/include/atf_common.h
+++ b/include/atf_common.h
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: BSD-3-Clause */
 /*
  * This is from the ARM TF Project,
- * Repository: https://github.com/ARM-software/arm-trusted-firmware.git
+ * Repository: https://github.com/TrustedFirmware-A/trusted-firmware-a.git
  * File: include/common/bl_common.h
  * Portions copyright (c) 2013-2016, ARM Limited and Contributors. All rights
  * reserved.