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";
	};