[AT91] Fix AC97 breakage

[Russell King - ARM Linux]

On Tue, Sep 22, 2009 at 11:47:43AM +0200, Andrew Victor wrote:
> Fix AC97 build breakage with converting to the shared AT91/AVR32 AC97 driver:
>   struct atmel_ac97_data  -> struct ac97c_platform_data
>   CONFIG_SND_AT91_AC97 -> CONFIG_SND_ATMEL_AC97C
> 
> Signed-off-by: Andrew Victor <linux at maxim.org.za>

If this has been build-tested, please submit it to the patch system.