[ALSA] hda-codec - Add support for LG LW25 laptop

Added the support for LG LW25 laptop with ALC880 codec.
It's the same codec model as LG LW20 (model=lg-lw).
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

Documentation/sound/alsa/ALSA-Configuration.txt

@@ -785,7 +785,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 	  uniwill	3-jack
 	  F1734		2-jack
 	  lg		LG laptop (m1 express dual)
-	  lg-lw		LG LW20 laptop
+	  lg-lw		LG LW20/LW25 laptop
 	  tcl		TCL S700
 	  clevo		Clevo laptops (m520G, m665n)
 	  test		for testing/debugging purpose, almost all controls can be

sound/pci/hda/patch_realtek.c

@@ -2270,6 +2270,7 @@ static struct hda_board_config alc880_cfg_tbl[] = {
 
 	{ .modelname = "lg-lw", .config = ALC880_LG_LW },
 	{ .pci_subvendor = 0x1854, .pci_subdevice = 0x0018, .config = ALC880_LG_LW },
+	{ .pci_subvendor = 0x1854, .pci_subdevice = 0x0077, .config = ALC880_LG_LW },
 
 #ifdef CONFIG_SND_DEBUG
 	{ .modelname = "test", .config = ALC880_TEST },