fastd: add upstream patch to fix build with musl

The missing 'sys/queue.h' issue when building with musl has been solved
by an upstream commit which eliminates the dependency on
'net/if_ether.h' and, consequently, 'sys/queue.h' (needed on OpenBSD
since 'net/if_ether.h' uses LIST_* definitions).

As usual, the included patch can be dropped in the future when a new
version of this package gets released and integrated into Buildroot.

Fixes:
  http://autobuild.buildroot.net/results/14e/14e291e22b8c8a9c590f0c6ef4316f8ab0aa1fff/
  http://autobuild.buildroot.net/results/ed4/ed4437bed01138380cd42c0dc943cd3ec85e26f0/
  http://autobuild.buildroot.net/results/ad2/ad226962413dece4fee07143a2bcfe07c44d55b6/


  ...

Signed-off-by: Rodrigo Rebello <rprebello@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>