ASoC: tlv320aic31xx: Staticise non-exported symbols
ASoC: tlv320aic31xx: Staticise non-exported symbols

Signed-off-by: Mark Brown <b51b9a92386687a9ac927cebfa0f978adeb8cea5@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs