linux-next: sound tree build warning

[Stephen Rothwell]

Hi Takashi,

Today's linux-next build (x86_64 allmodconfig) produced this warning:

sound/soc/codecs/wm8731.c:44: warning: 'wm8731_spi_write' declared 'static' but never defined

Introduced by commit 27ded041f03026e8c6be9efc626e11ddfb4620c1 ("ASoC:
Factor out 7 bit register 9 bit data SPI write").

-- 
Cheers,
Stephen Rothwell                    sfr@xxxxxxxxxxxxxxxx
http://www.canb.auug.org.au/~sfr/

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