ALSA: sound/arm: Fix build failure caused by missing struct aaci definition

This patch fixes a build failure introduced by the patch
  ALSA: AACI: factor common hw_params logic into aaci_pcm_hw_params [1]
by adding/moving the aaci struct to the right position.

The patch mentioned above merged common source parts into one function,
but unfortunately left out the aaci struct and consequently caused a
build failure e.g. for arm versatile_config [2]

References:
[1] http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=d3aee7996c30f928bbbbfd0994148e35d2e83084
[2] http://kisskb.ellerman.id.au/kisskb/buildresult/1893605/

Patch against Linus' tree.
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/arm/aaci.c

@@ -441,6 +441,7 @@ static int aaci_pcm_hw_params(struct snd_pcm_substream *substream,
 			      struct snd_pcm_hw_params *params)
 {
 	int err;
+	struct aaci *aaci = substream->private_data;
 
 	aaci_pcm_hw_free(substream);
 	if (aacirun->pcm_open) {
@@ -560,7 +561,6 @@ static int aaci_pcm_open(struct snd_pcm_substream *substream)
 static int aaci_pcm_playback_hw_params(struct snd_pcm_substream *substream,
 				       struct snd_pcm_hw_params *params)
 {
-	struct aaci *aaci = substream->private_data;
 	struct aaci_runtime *aacirun = substream->runtime->private_data;
 	unsigned int channels = params_channels(params);
 	int ret;
@@ -659,7 +659,6 @@ static struct snd_pcm_ops aaci_playback_ops = {
 static int aaci_pcm_capture_hw_params(struct snd_pcm_substream *substream,
 				      struct snd_pcm_hw_params *params)
 {
-	struct aaci *aaci = substream->private_data;
 	struct aaci_runtime *aacirun = substream->runtime->private_data;
 	int ret;