iio: dac: set variable max5522_channels storage-class-specifier to static
smatch reports drivers/iio/dac/max5522.c:55:28: warning: symbol 'max5522_channels' was not declared. Should it be static? This variable is only used in one file so it should be static. Signed-off-by: Tom Rix <trix@redhat.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://lore.kernel.org/r/20230404013828.1914523-1-trix@redhat.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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