linux-phytec-ti

ASoC: Remove duplicate linux/delay.h inclusion.

It's enough to include linux/delay.h just once in
sound/soc/codecs/wm8915.c, so remove the duplicate.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>