util-linux-libuuid: Simplify recipe and rename from util-linux-uuid

Rename the recipe from util-linux-uuid to util-linux-libuuid which means
we can drop the custom PACKAGES and FILES defintions which simplifies
things. Also move the LICENSE setting to the libuuid recipe so that
it is correctly applied to the right packages.

This means the standard definitions from bitbake.conf are used, avoiding
errors from situations where users have customised settings causing
failures.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>