ASoC: pxa: remove bindings from pxa2xx-pcm

This platform is no longer needed on DT boards, so let's remove them to
avoid confusion. DT bindings should use the CPU DAIs (I2S/SSP/AC97)
directly.
Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/mrvl,pxa2xx-pcm.txt

-DT bindings for ARM PXA2xx PCM platform driver
-
-This is just a dummy driver that registers the PXA ASoC platform driver.
-It does not have any resources assigned.
-
-Required properties:
-
-	- compatible		'mrvl,pxa-pcm-audio'
-
-Example:
-
-	pxa_pcm_audio: snd_soc_pxa_audio {
-		compatible = "mrvl,pxa-pcm-audio";
-	};
-

sound/soc/pxa/pxa2xx-pcm.c

@@ -32,18 +32,9 @@ static int pxa2xx_soc_platform_probe(struct platform_device *pdev)
 					       NULL, 0);
 }
 
-#ifdef CONFIG_OF
-static const struct of_device_id snd_soc_pxa_audio_match[] = {
-	{ .compatible   = "mrvl,pxa-pcm-audio" },
-	{ }
-};
-MODULE_DEVICE_TABLE(of, snd_soc_pxa_audio_match);
-#endif
-
 static struct platform_driver pxa_pcm_driver = {
 	.driver = {
 		.name = "pxa-pcm-audio",
-		.of_match_table = of_match_ptr(snd_soc_pxa_audio_match),
 	},
 
 	.probe = pxa2xx_soc_platform_probe,