wireguard: bump to 0.0.20171111

wireguard: bump to 0.0.20171111

edaad55 (tag: 0.0.20171111) version: bump snapshot
7a989b3 tools: allow for NULL keys everywhere
46f8cbc curve25519: reject deriving from NULL private keys
9b43542 tools: remove ioctl cruft
f6cea8e allowedips: rename from routingtable
23f553e wg-quick: allow for tabs in keys
ab9befb netlink: make sure we reserve space for NLMSG_DONE
73405c0 compat: 4.4.0 has strange ECN function
868be0c wg-quick: stat the correct enclosing folder of config file
ceb11ba qemu: bump kernel version
0a8e173 receive: hoist fpu outside of receive loop
bee188a qemu: more debugging
f1fdd8d device: wait for all peers to be freed before destroying
2188248 qemu: check for memory leaks
c77a34e netlink: plug memory leak
0ac8efd device: please lockdep
a51e196 global: revert checkpatch.pl changes
65c49d7 Kconfig: remove trailing whitespace

Compile-tested-for: ar71xx
Run-tested-on: ar71xx Archer C7 v2

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>