ASoC: AMD: acp-config: fix missing dependency on SND_SOC_ACPI

With a custom .config, the following error is thrown:

ERROR: modpost: "snd_soc_acpi_codec_list"
[sound/soc/amd/snd-acp-config.ko] undefined!

Fix by adding a clear dependency on SND_SOC_ACPI

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211207192309.43883-1-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>