ASoC: pxa2xx-i2s: Fix suspend/resume

pxa2xx_i2s_resume is :
 - unconditionnaly setting SACR0_ENB
 - unsetting SACR0_ENB in saved SACR0 pxa_i2s.sacr0
fix these.

In pxa2xx_i2s_{resume,suspend}, save/restore registers even
when !dai->active.
Signed-off-by: Karl Beldan <karl.beldan@mobile-devices.fr>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/pxa/pxa2xx-i2s.c

@@ -262,9 +262,6 @@ static void pxa2xx_i2s_shutdown(struct snd_pcm_substream *substream,
 #ifdef CONFIG_PM
 static int pxa2xx_i2s_suspend(struct snd_soc_dai *dai)
 {
-	if (!dai->active)
-		return 0;
-
 	/* store registers */
 	pxa_i2s.sacr0 = SACR0;
 	pxa_i2s.sacr1 = SACR1;
@@ -279,16 +276,14 @@ static int pxa2xx_i2s_suspend(struct snd_soc_dai *dai)
 
 static int pxa2xx_i2s_resume(struct snd_soc_dai *dai)
 {
-	if (!dai->active)
-		return 0;
-
 	pxa_i2s_wait();
 
-	SACR0 = pxa_i2s.sacr0 &= ~SACR0_ENB;
+	SACR0 = pxa_i2s.sacr0 & ~SACR0_ENB;
 	SACR1 = pxa_i2s.sacr1;
 	SAIMR = pxa_i2s.saimr;
 	SADIV = pxa_i2s.sadiv;
-	SACR0 |= SACR0_ENB;
+
+	SACR0 = pxa_i2s.sacr0;
 
 	return 0;
 }