dtv-scan-tables: add mux H to stations transmitting it in Finland

The new mux H is being broadcasted by Digita from 6 stations in Finland.

Signed-off-by: Olli Salonen <olli.salonen@iki.fi>
dtv-scan-tables: fix the DNA muxes in Finland to DVB-T2

All of the DNA muxes in Finland are DVB-T2, not DVB-T.

Signed-off-by: Olli Salonen <olli.salonen@iki.fi>