ALSA: ymfpci - Fix legacy registers on S3/S4 resume

We need to resume two legacy registers to recover MIDI/FM functionality
on S3/S4 resume, too.

Signed-off-by: Takashi Iwai <[e-mail]>

include/sound/ymfpci.h

···
 #ifdef CONFIG_PM
 	u32 *saved_regs;
 	u32 saved_ydsxgr_mode;
+	u16 saved_dsxg_legacy;
+	u16 saved_dsxg_elegacy;
 #endif
 };
 

sound/pci/ymfpci/ymfpci_main.c

···
 	for (i = 0; i < YDSXGR_NUM_SAVED_REGS; i++)
 		chip->saved_regs[i] = snd_ymfpci_readl(chip, saved_regs_index[i]);
 	chip->saved_ydsxgr_mode = snd_ymfpci_readl(chip, YDSXGR_MODE);
+	pci_read_config_word(chip->pci, PCIR_DSXG_LEGACY,
+			     &chip->saved_dsxg_legacy);
+	pci_read_config_word(chip->pci, PCIR_DSXG_ELEGACY,
+			     &chip->saved_dsxg_elegacy);
 	snd_ymfpci_writel(chip, YDSXGR_NATIVEDACOUTVOL, 0);
 	snd_ymfpci_writel(chip, YDSXGR_BUF441OUTVOL, 0);
 	snd_ymfpci_disable_dsp(chip);
···
 		snd_ymfpci_writel(chip, saved_regs_index[i], chip->saved_regs[i]);
 
 	snd_ac97_resume(chip->ac97);
+
+	pci_write_config_word(chip->pci, PCIR_DSXG_LEGACY,
+			      chip->saved_dsxg_legacy);
+	pci_write_config_word(chip->pci, PCIR_DSXG_ELEGACY,
+			      chip->saved_dsxg_elegacy);
 
 	/* start hw again */
 	if (chip->start_count > 0) {