intel_adsp: ace: Fix undefined reference

/zephyr/soc/intel/intel_adsp/ace/power.c:46:9: warning: implicit
declaration of function 'cache_data_flush_range'; did you mean
'sys_cache_data_flush_range'? [-Wimplicit-function-declaration]
   46 |         cache_data_flush_range((__sparse_force void *)
      |         ^~~~~~~~~~~~~~~~~~~~~~
      |         sys_cache_data_flush_range

Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>