[SAA7134] Don't sound via LINE2

[Ohta Kyuma <alpha292@xxxxxxxxxxxx>]

Hi,
 Recently saa7134 driver,decoding TV Sound via LINE2 
(.amux:LINE2 at saa7134-cards.c) and when seeing TV (fbtv,xawtv....),
sound is muted :(
On any version,not seeing TV (no executing v4l2-soft) sound is sounding.
When decoding TV Sound via TV (.amux: TV),sequence is right.
Please help....
Ohta.