ASoC: Intel: avs: Correctly access topology fields

Fixes following warning:
sound/soc/intel/avs/topology.c:1636:20: sparse: sparse: restricted __le32 degrades to integer

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Reviewed-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20230113190310.1451693-3-amadeuszx.slawinski@linux.intel.com


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