[ALSA] hda-intel - Fix compile warning in snd_hwdep_ioctl_compat()

Fix missing cast:
    sound/pci/hda/hda_hwdep.c:86: warning: passing argument 4 of 'hda_hwdep_ioctl' makes integer from pointer without a cast
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

sound/pci/hda/hda_hwdep.c

@@ -83,7 +83,7 @@ static int hda_hwdep_ioctl(struct snd_hwdep *hw, struct file *file,
 static int hda_hwdep_ioctl_compat(struct snd_hwdep *hw, struct file *file,
 				  unsigned int cmd, unsigned long arg)
 {
-	return hda_hwdep_ioctl(hw, file, cmd, compat_ptr(arg));
+	return hda_hwdep_ioctl(hw, file, cmd, (unsigned long)compat_ptr(arg));
 }
 #endif