arm architecture < v6 does not have the dmb support, therefore do
not add the sync primitives to compiler-rt builtins build
(From OE-Core rev: e1b143860b221600f7dab5c08e5b187aefb851dd)
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>