ALSA: hda - Add missing COEF initialization for ALC887

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

sound/pci/hda/patch_realtek.c

@@ -1066,6 +1066,7 @@ do_sku:
 		case 0x10ec0882:
 		case 0x10ec0883:
 		case 0x10ec0885:
+		case 0x10ec0887:
 		case 0x10ec0889:
 			snd_hda_codec_write(codec, 0x20, 0,
 					    AC_VERB_SET_COEF_INDEX, 7);