gssdp-client: Fill the device interface index for bionic
gssdp-client: Fill the device interface index for bionic

This is possible now due to the recent support of if_nametoindex that is
available on android. Without that, the device index is never filled
leading to all packets that are received on the socket to be dropped.

Signed-off-by: Aurélien Chabot <aurelien.chabot@parrot.com>

https://bugzilla.gnome.org/show_bug.cgi?id=765688

GNOME/gssdp,GNOME/gssdp,GNOME/gssdp