package/wireguard-tools: bump to version 1.0-20200206

package/wireguard-tools: bump to version 1.0-20200206

Drop libmnl dependency. From the announcement:

 * netlink: remove libmnl requirement

We no longer require libmnl.  It turns out that inlining the small subset of
libmnl that we actually use results in a smaller binary than the overhead of
linking to the external library.

pkg-config is still used for the systemd support though, so move the
host-pkgconf dependency there.

For more details, see the announcement:

https://lists.zx2c4.com/pipermail/wireguard/2020-February/004963.html

While we are at it, adjust the white space in the .hash file to match the
new agreements.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>