ASoC: make ops a pointer in 'struct snd_soc_dai'

Considering the fact that most cpu_dai or codec_dai are using a same
'snd_soc_dai_ops' for several similar interfaces, 'ops' would be better
made a pointer instead, to make sharing easier and code a bit cleaner.

The patch below is rather preliminary since the asoc tree is being
actively developed, and this touches almost every piece of code,
(and possibly many others in development need to be changed as
well). Building of all codecs are OK, yet to every SoC, I didn't test
that.

Signed-off-by: Eric Miao <eric.miao@marvell.com>
Acked-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/wm8990.c b/sound/soc/codecs/wm8990.c
index 1a38421..c518c3e 100644
--- a/sound/soc/codecs/wm8990.c
+++ b/sound/soc/codecs/wm8990.c
@@ -1332,6 +1332,15 @@
  * 1. ADC/DAC on Primary Interface
  * 2. ADC on Primary Interface/DAC on secondary
  */
+static struct snd_soc_dai_ops wm8990_dai_ops = {
+	.hw_params	= wm8990_hw_params,
+	.digital_mute	= wm8990_mute,
+	.set_fmt	= wm8990_set_dai_fmt,
+	.set_clkdiv	= wm8990_set_dai_clkdiv,
+	.set_pll	= wm8990_set_dai_pll,
+	.set_sysclk	= wm8990_set_dai_sysclk,
+};
+
 struct snd_soc_dai wm8990_dai = {
 /* ADC/DAC on primary */
 	.name = "WM8990 ADC/DAC Primary",
@@ -1348,14 +1357,7 @@
 		.channels_max = 2,
 		.rates = WM8990_RATES,
 		.formats = WM8990_FORMATS,},
-	.ops = {
-		.hw_params = wm8990_hw_params,
-		.digital_mute = wm8990_mute,
-		.set_fmt = wm8990_set_dai_fmt,
-		.set_clkdiv = wm8990_set_dai_clkdiv,
-		.set_pll = wm8990_set_dai_pll,
-		.set_sysclk = wm8990_set_dai_sysclk,
-	},
+	.ops = &wm8990_dai_ops,
 };
 EXPORT_SYMBOL_GPL(wm8990_dai);