ASoC: SPEAr: get rid of spear-pcm-audio struct device

Modify the SPEAr PCM driver so that it's a utility library that can be
registered on each DAI, rather than a separate struct device. This is
more in line with how many recent DT-converted platforms operate, and
avoids the need for yet another struct device.

This is also required as a pre-cursor to removing
spear_pcm_request_chan().

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --cc sound/soc/spear/spdif_in.c
Simple merge

diff --cc sound/soc/spear/spdif_out.c
Simple merge

diff --cc sound/soc/spear/spear_pcm.c
Simple merge

diff --cc sound/soc/spear/spear_pcm.h
Simple merge