feat(compiler-rt): update compiler-rt source files

Update the compiler-rt source files to the tip of the llvm-project [1].
To do this some new header files were pulled in from the freebsd-src
repo [2].

[1] https://github.com/llvm/llvm-project/commit/fae258e
[2] https://github.com/freebsd/freebsd-src/commit/243a0eda

Change-Id: I1a012b1fe04e127d35e208923877c98c5d999d00
Signed-off-by: Daniel Boulby <daniel.boulby@arm.com>
diff --git a/lib/compiler-rt/builtins/arm/aeabi_uldivmod.S b/lib/compiler-rt/builtins/arm/aeabi_uldivmod.S
index be343b6..4fc9770 100644
--- a/lib/compiler-rt/builtins/arm/aeabi_uldivmod.S
+++ b/lib/compiler-rt/builtins/arm/aeabi_uldivmod.S
@@ -1,9 +1,8 @@
 //===-- aeabi_uldivmod.S - EABI uldivmod implementation -------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//