ASoC: amd: acp: refactor SoundWire machine driver code

Refactor Soundwire machine driver code by using common SoundWire
endpoint parsing helper functions.
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://patch.msgid.link/20240913090631.1834543-6-Vijendar.Mukunda@amd.comSigned-off-by: Mark Brown <broonie@kernel.org>