ASoC: fsl_asrc: rename asrc_priv to asrc

In order to move common structure to fsl_asrc_common.h
we change the name of asrc_priv to asrc, the asrc_priv
will be used by new struct fsl_asrc_priv.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
Link: https://lore.kernel.org/r/722142c2e1b57a95f911db1d42d901b88fc283d6.1587038908.git.shengjiu.wang@nxp.com


Signed-off-by: Mark Brown <broonie@kernel.org>