omap: rx51: Remove redefinition of rx51_aic3x_data

Redefinition of rx51_aic3x_data got introduced when merging upstread changes
for 2.6.36 and ASoC Multi-Component Support.

This must go together with multi-component commit f0fba2ad.

Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Cc: Tony Lindgren <tony@atomide.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>