[PATCH 6/9] ASoC: codecs: pcm179x-spi: Mark OF related data as maybe unused

[Krzysztof Kozlowski]

The driver can be compile tested with !CONFIG_OF making certain data
unused:

  sound/soc/codecs/pcm179x-spi.c:32:34: error: ‘pcm179x_of_match’ defined but not used [-Werror=unused-const-variable=]

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>
---
 sound/soc/codecs/pcm179x-spi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/codecs/pcm179x-spi.c b/sound/soc/codecs/pcm179x-spi.c
index ebf63ea90a1c..192fee90c971 100644
--- a/sound/soc/codecs/pcm179x-spi.c
+++ b/sound/soc/codecs/pcm179x-spi.c
@@ -29,7 +29,7 @@ static int pcm179x_spi_probe(struct spi_device *spi)
 	return pcm179x_common_init(&spi->dev, regmap);
 }
 
-static const struct of_device_id pcm179x_of_match[] = {
+static const struct of_device_id pcm179x_of_match[] __maybe_unused = {
 	{ .compatible = "ti,pcm1792a", },
 	{ }
 };
-- 
2.34.1