ASoC: Revert "ASoC: ab8500: Inform SoC Core that we have our own I/O arrangements"

Since commit 98d3088e

 (SoC: core: Fix check before defaulting to regmap)
, it is not necessary to provide codec->control_data anymore.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>