ASoC: qcom: sc7180: initialize the "no_headphone" variable

The "no_headphone" variable is never set to "false" so it could be
uninitialized.

Fixes: e936619b ("ASoC: qcom: sc7180: Modify machine driver for sound card")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20201116125950.GA44063@mwandaSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/qcom/sc7180.c

@@ -316,7 +316,7 @@ static int sc7180_snd_platform_probe(struct platform_device *pdev)
 	struct snd_soc_dai_link *link;
 	int ret;
 	int i;
-	bool no_headphone;
+	bool no_headphone = false;
 
 	/* Allocate the private data */
 	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);