fix: add Arm to AUTHORS file

Add Arm Ltd to the AUTHORS file.

Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Change-Id: I0cab4dfa25af75957380174421a32dfcf44891d7
diff --git a/AUTHORS b/AUTHORS
index 7c577d2..2d9ea28 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -5,4 +5,5 @@
 # of contributors, see the revision history in source control.
 #
 # Please keep the list sorted alphabetically.
+Arm Ltd.
 Google LLC