ASoC: audio-graph-card: Drop device node clocks property

An endpoint is not a device and it is recommended to use clocks property
in the device node. Hence reverting the original change.

Fixes: 531e5b7a ("ASoC: audio-graph-card: Add clocks property to endpoint node")
Suggested-by: Rob Herring <robh@kernel.org>
Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Sameer Pujar <spujar@nvidia.com>
Link: https://lore.kernel.org/r/1612939421-19900-3-git-send-email-spujar@nvidia.com


Signed-off-by: Mark Brown <broonie@kernel.org>