Updated dvb-t/au-Melbourne scan table

Attached is a diff patch file to update dvb-t/au-Melbourne for the new
transmission frequency for SBS which came into effect in early 2014 as
well as adding channel 31, a community channel.

Could this please be considered for patching the existing file?

Regards

Paul

Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>