ASoC: Intel: avs: Drop fifo_lock

Log gathering is already locked, thanks to ->trace_lock.

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20221202152841.672536-6-cezary.rojewski@intel.com


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