ALSA: es1688: allocate snd_es1688 structure as a part of snd_card structure

Allocate the snd_es1688 during the snd_card allocation.
This allows to remove the card pointer from the snd_es1688 structure.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/include/sound/es1688.h b/include/sound/es1688.h
index 10fcf14..4c29572 100644
--- a/include/sound/es1688.h
+++ b/include/sound/es1688.h
@@ -44,7 +44,6 @@
 	unsigned char pad;
 	unsigned int dma_size;
 
-	struct snd_card *card;
 	struct snd_pcm *pcm;
 	struct snd_pcm_substream *playback_substream;
 	struct snd_pcm_substream *capture_substream;
@@ -108,14 +107,15 @@
 void snd_es1688_mixer_write(struct snd_es1688 *chip, unsigned char reg, unsigned char data);
 
 int snd_es1688_create(struct snd_card *card,
+		      struct snd_es1688 *chip,
 		      unsigned long port,
 		      unsigned long mpu_port,
 		      int irq,
 		      int mpu_irq,
 		      int dma8,
-		      unsigned short hardware,
-		      struct snd_es1688 ** rchip);
-int snd_es1688_pcm(struct snd_es1688 *chip, int device, struct snd_pcm ** rpcm);
-int snd_es1688_mixer(struct snd_es1688 *chip);
+		      unsigned short hardware);
+int snd_es1688_pcm(struct snd_card *card, struct snd_es1688 *chip, int device,
+		   struct snd_pcm **rpcm);
+int snd_es1688_mixer(struct snd_card *card, struct snd_es1688 *chip);
 
 #endif /* __SOUND_ES1688_H */