ASoC: core: If a platform doesn't have an of_node use parent's node
Support was added to allow location of both CPU and CODEC components of a DAI link from their parent's of_node if they did not have an of_node themselves in this commit: commit 3e0aa8d8 ("ASoC: core: If component doesn't have of_node use parent's node instead") However this leaves platforms as something of a special case as the major DAI component that doesn't do this. Since this is useful for MFD devices which often utilise a single device tree entry for the whole device, add support for looking up platforms from the parent's of_node as well. Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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