ASoC: Intel: avs: Do not treat unsupported IPCs as invalid

Utilize NOT_SUPPORTED status code to differentiate between unsupported
and invalid requests. Skip over error paths if it is the former that is
communicated by the base firmware.

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20221010121955.718168-12-cezary.rojewski@intel.com


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