ASoC: Intel: avs: Drop pcm.h dependency for probes

ASoC: Intel: avs: Drop pcm.h dependency for probes

The 'probe' machine board is not a typical one, it serves debug purpose
only and does not expect any kind of topology. The topology descriptor
pointer (acomp->tplg) is the only reason an avs-driver component would
utilize the pcm.c helpers and be described by a 'struct
avs_soc_component' instance rather than 'struct snd_soc_component' one.

Cut the line linking probes.c with pcm.h to avoid confusing readers.
And with that link gone, constify the component-driver again.

Reviewed-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://patch.msgid.link/20250818104126.526442-3-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>