ASoC: amd: add platform devices for acp6x pdm driver and dmic driver

ACP6.x IP has PDM decoder block.
Create a platform device for it, so that the PDM platform driver
can be bound to this device.
Pass PCI resources like MMIO to this platform device.

Create a platform device for generic dmic codec driver.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20211018112044.1705805-5-Vijendar.Mukunda@amd.com


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