snd_soc_init_card() is always called as the last part of the CODEC probe
function so we can factor it out into the core card setup rather than
have each CODEC replicate the code to do the initialiastation. This will
be required to support multiple CODECs per card.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

1. delete redundant assignment to bus field in spi_driver structure
2. fix lost assignment to set_bias_level entry in ad1938 codec dai
3. change spi driver name of ad1836 from "ad1836-spi" to "ad1836"
Signed-off-by: NBarry Song <barry.song@analog.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Remove unused #include <linux/version.h>('s) in
  sound/soc/codecs/ad1836.c
  sound/soc/codecs/ad1938.c
  sound/soc/codecs/wm8974.c
Signed-off-by: NHuang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

- Build in SND_SOC_ALL_CODECS.
- Remove null suspend/resume stuff.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

There has been an ad1836 driver in sound/blackfin based on traditional alsa.
The new driver is based on asoc. The architecture of ad1836 codec driver is
very much like ad1938.
Signed-off-by: NBarry Song <21cnbao@gmail.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>