This was enabled for Linux only, but Linux users should use Avahi,
which is present on most modern distributions, and implements mDNS
functionality.

Change-Id: Ibb9d16c9fbd5c2571b98e1450276459d18eb65df
Reviewed-by: Tobias Hunger <tobias.hunger@nokia.com>
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@nokia.com>