ASoC: tlv320aic3x: no mono controls 3007 model

if codec driver is used for AIC3X_MODEL_3007 the mono iout controls overwrite
registers for class-d amplifier.
classd amplifier controls are only used for AIC3X_MODEL_3007.

Removing all mono snd_kcontrol_new, snd_soc_dapm_widget, snd_soc_dapm_route
and aic3x_init stuff from common code and call only for not AIC3X_MODEL_3007
codecs.

Testet only with AIC3X_MODEL_3007

Signed-off-by: Jan Weitzel <j.weitzel@phytec.de>
Signed-off-by: Mark Brown <broonie@linaro.org>