ALSA: emu10k1 - Fix digital/analog switch on audigy2 ZS

Fix the inverted logic of shared spdif switch.

Reference: Novell bnc#478496
	https://bugzilla.novell.com/show_bug.cgi?id=478496

Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/emu10k1/emu10k1_main.c

@@ -1528,6 +1528,7 @@ static struct snd_emu_chip_details emu_chip_details[] = {
 	 .ca0151_chip = 1,
 	 .spk71 = 1,
 	 .spdif_bug = 1,
+	 .invert_shared_spdif = 1,	/* digital/analog switch swapped */
 	 .ac97_chip = 1} ,
 	{.vendor = 0x1102, .device = 0x0004, .subsystem = 0x10021102,
 	 .driver = "Audigy2", .name = "SB Audigy 2 Platinum [SB0240P]",