ALSA: x86: Clean up unused defines and inclusions

Many defines and constants are left unused.  Clean them up.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/x86/intel_hdmi_audio.c

@@ -21,19 +21,21 @@
  * ALSA driver for Intel HDMI audio
  */
 
+#include <linux/types.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
 #include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/interrupt.h>
-#include <linux/acpi.h>
+#include <linux/pm_runtime.h>
 #include <asm/cacheflush.h>
-#include <sound/pcm.h>
 #include <sound/core.h>
+#include <sound/asoundef.h>
+#include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/initval.h>
 #include <sound/control.h>
-#include <sound/initval.h>
+#include <drm/drm_edid.h>
 #include <drm/intel_lpe_audio.h>
 #include "intel_hdmi_audio.h"
 
@@ -929,6 +931,8 @@ static int snd_intelhad_prog_n(u32 aud_samp_freq, u32 *n_param,
 	return 0;
 }
 
+#define MAX_CNT			0xFF
+
 static void snd_intelhad_handle_underrun(struct snd_intelhad *intelhaddata)
 {
 	u32 hdmi_status = 0, i = 0;