[PATCH v4 0/1] ASoc: kirkwood: extend the kirkwood audio subsystem for DT usage

This patch series adds DT support to the kirkwood/mvebu audio subsystem.

History
v4
	- change the DT name to "mrvl,mvebu-audio"
	- remove previous patches 1..3 which have been applied by Russell King
v3
	- change the DT name from "kirkwood-i2s" to "mvebu-pcm-audio"
	- apply to linux-next
	- let NULL as the internal i2s clock for compatibility
	- change i2s external clock name to "extclk" instead of "external"
	- cancel previous patch 1/4. Russell's patch should be applied instead.
v2
	- fix compilation errors

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