[PATCH v2 4/4] ASOC: sunxi: Add support for the spdif block

[kbuild test robot]

Hi Marcus,

[auto build test results on next-20150930 -- if it's inappropriate base, please ignore]

reproduce:
  # apt-get install sparse
  make ARCH=x86_64 allmodconfig
  make C=1 CF=-D__CHECK_ENDIAN__


sparse warnings: (new ones prefixed by >>)

>> sound/soc/sunxi/sun4i-spdif.c:207:6: sparse: symbol 'sun4i_snd_txctrl_on' was not declared. Should it be static?
>> sound/soc/sunxi/sun4i-spdif.c:231:6: sparse: symbol 'sun4i_snd_txctrl_off' was not declared. Should it be static?
>> sound/soc/sunxi/sun4i-spdif.c:451:28: sparse: incorrect type in initializer (different base types)
   sound/soc/sunxi/sun4i-spdif.c:451:28:    expected unsigned long long [unsigned] [usertype] formats
   sound/soc/sunxi/sun4i-spdif.c:451:28:    got restricted snd_pcm_format_t

Please review and possibly fold the followup patch.

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