When building with a merged /usr dir the udev directory
lives at /usr/lib/udev - update the FILES pattern to also
pick up udev files installed two levels below the / to
ensure a merged /usr works.
(From OE-Core rev: 7ff40fff4cb6b735ceb27c6b736c2d13656fedec)
Signed-off-by: Joshua Lock <joshua.lock@collabora.co.uk>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>