ASoC: Intel: avs: Separate debug symbols

ASoC: Intel: avs: Separate debug symbols

Make it clear what is part of debug functionality and what is not by
separating debug symbols away from the common header file.

Apart from changing avs_probe_platform_register() to return -ENOTSUPP
when CONFIG_DEBUG_FS is disabled, status quo is achieved.

Reviewed-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://patch.msgid.link/20250818104126.526442-2-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>