ASoC: amd: acp-pcm-dma: add .delay support

Now ALSA SoC supports .delay for component.
This patch uses it, and not update runtime->delay on .pointer
directly / secretly.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/8735nwy25o.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>