ASoC: fsl: fix typos for sound/soc/fsl/*

There are too much noise about the typos for fsl's drivers. So I fix
all the typos here in this patch in almost every file I touched.

Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com>
Signed-off-by: Mark Brown <broonie@kernel.org>