util/superiotool/nuvoton.c: fix NCT6687D PP LDN typo

Parallel Port has LDN 1 and Serial Pot has LDN 2. Fix typo made in the
patch adding register definitions for NCT6687D Super I/O chip.

Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Change-Id: If850d2a0a03bd41e3d855f347fd182831bcfcdca
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68710
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Singer <felixsinger@posteo.net>
diff --git a/util/superiotool/nuvoton.c b/util/superiotool/nuvoton.c
index 66dcfce..ea11393 100644
--- a/util/superiotool/nuvoton.c
+++ b/util/superiotool/nuvoton.c
@@ -90,7 +90,7 @@
 			{0xff,0xff,0x00,0x00,0x00,0x00,0x10,0x00,0x00,
 			 0x00,0xd5,0x92,0x00,0x80,0x67,0x01,0x00,0x3e,
 			 0x00,0x03,0x0f,0x00,0x00,0x00,MISC,EOT}},
-		{0x02, "Parallel Port",
+		{0x01, "Parallel Port",
 			{0x30,0x60,0x61,0x70,0x74,0xf0,EOT},
 			{0x00,0x00,0x00,0x00,0x00,0x3f,EOT}},
 		{0x02, "UART A",