udev-extraconf: change LICENSE to MIT
* Original recipe added by RP in
fc128ab1e4fec27d44cebfa690a9bc233eda0caf
was saying GPL (later GPLv2)
* COPYING.GPL was added to reflect that
* Meta-oe has similar recipe with MIT license and even more scripts, so lets
change LICENSE here too
* Most code was derived from the meta-oe version or added to OE arguably
under MIT and the MIT license makes most sense here
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
