ASoC: mxs: mxs-saif: Register the irq with the device name

Instead of registering the irq name with the driver name, it's better to pass
the device name so that we have a more explicit indication as to what saif
instance the irq is related:

$ cat /proc/interrupts
           CPU0
...
214:          4         -  59  80042000.saif
215:          0         -  58  80046000.saif
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/mxs/mxs-saif.c

@@ -773,7 +773,7 @@ static int mxs_saif_probe(struct platform_device *pdev)
 
 	saif->dev = &pdev->dev;
 	ret = devm_request_irq(&pdev->dev, saif->irq, mxs_saif_irq, 0,
-			       "mxs-saif", saif);
+			       dev_name(&pdev->dev), saif);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to request irq\n");
 		return ret;