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 <tiwai@suse.de>
diff --git a/include/sound/ymfpci.h b/include/sound/ymfpci.h
index 444cd6b..4119966 100644
--- a/include/sound/ymfpci.h
+++ b/include/sound/ymfpci.h
@@ -366,6 +366,8 @@
 #ifdef CONFIG_PM
 	u32 *saved_regs;
 	u32 saved_ydsxgr_mode;
+	u16 saved_dsxg_legacy;
+	u16 saved_dsxg_elegacy;
 #endif
 };