ASoC: amd: acp: move get_acp63_cpu_pin_id() to common file

get_acp63_cpu_pin_id() is the common SoundWire machine driver
helper function will be used for AMD Legacy(No DSP) generic
SoundWire machine driver as well.
Move get_acp63_cpu_pin_id() function to common place holder.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://patch.msgid.link/20241113115223.3274868-5-Vijendar.Mukunda@amd.com


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