As eudev requires devtmpfs it is not necessary to keep a cache anymore
as the kernel handles entries in /dev itself.
(From OE-Core rev: 048f4149b8438c521e8b65a3c96d850a9b4a3e5b)
Signed-off-by: Oliver Stäbler <oliver.staebler@bytesatwork.ch>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>