ASoC: SOF: Intel: hda-pcm: remove useless dependency on hdac_ext

Nothing depends on definitions in hdaudio_ext.h, don't include it
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/intel/hda-pcm.c

@@ -15,7 +15,6 @@
  * Hardware interface for generic Intel audio DSP HDA IP
  */
 
-#include <sound/hdaudio_ext.h>
 #include <sound/hda_register.h>
 #include <sound/pcm_params.h>
 #include "../ops.h"