ASoC: amd: acp: Refactor dmic-codec platform device creation

Refactor dmic-codec platform driver creation using helper function.

Signed-off-by: Venkata Prasad Potturu <venkataprasad.potturu@amd.com>
Link: https://patch.msgid.link/20250310183201.11979-4-venkataprasad.potturu@amd.com


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