util/superiotool: add support for Nuvoton NCT6796D

Registers and default values taken from public datasheet:
https://www.nuvoton.com/resource-files/NCT6796D_Datasheet_V0_6.pdf

TEST=build/dump SIO registers on Erying SRMJ4 mainboard

Change-Id: I0ff940a17b0c38a5ca66e90dd4e075a2b04dcfc1
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80003
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/util/superiotool/nuvoton.c b/util/superiotool/nuvoton.c
index 21d77fd..05974f2 100644
--- a/util/superiotool/nuvoton.c
+++ b/util/superiotool/nuvoton.c
@@ -736,6 +736,65 @@
 			{0x30,0xe0,0xe1,0xe2,0xe3,EOT},
 			{0x20,0x20,0x04,0x05,0x01,EOT}},
 		{EOT}}},
+	{0xd42a, "NCT6796D", {
+		{NOLDN, NULL,
+			{0x07,0x10,0x11,0x13,0x14,0x1a,0x1b,0x1c,0x1d,0x20,0x21,0x22,0x24,0x25,0x26,0x27,0x28,0x2a,0x2b,0x2c,0x2d,0x2f,EOT},
+			{0x00,0xff,0xff,0x00,0x00,0x30,0x18,0x00,0x00,0xd4,0x21,0xff,0x04,0x00,MISC,0x03,0x00,0xc0,0x00,0x01,0x00,MISC,EOT}},
+		{0x01, "Parallel Port",
+			{0x30,0x60,0x61,0x70,0x74,0xf0,EOT},
+			{0x00,0x03,0x78,0x07,0x04,0x3f,EOT}},
+		{0x02, "UART A",
+			{0x30,0x60,0x61,0x70,0xf0,0xf2,EOT},
+			{0x01,0x03,0xf8,0x04,0x00,0x00,EOT}},
+		{0x03, "UART B",
+			{0x30,0x60,0x61,0x70,0xf0,0xf1,0xf2,EOT},
+			{0x01,0x02,0xf8,0x03,0x00,0x00,0x00,EOT}},
+		{0x05, "Keyboard Controller",
+			{0x30,0x60,0x61,0x62,0x63,0x70,0x72,0xf0,EOT},
+			{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x43,EOT}},
+		{0x06, "Consumer IR",
+			{0x30,0x60,0x61,0x70,EOT},
+			{0x00,0x00,0x00,0x00,EOT}},
+		{0x07, "GPIO 6, GPIO 7, GPIO 8",
+			{0x30,0xe0,0xe1,0xe2,0xe3,0xe4,0xe5,0xe6,0xe7,0xec,0xed,0xf4,0xf5,0xf6,0xf7,0xf8,EOT},
+			{0x00,0xff,0x00,0x00,0x00,0xff,0x00,0x00,0x00,0x00,0x00,0xff,0x00,0x00,0x00,0x00,EOT}},
+		{0x08, "WDT1, WDT3, GPIO 0, GPIO 1",
+			{0x30,0x60,0x61,0xe0,0xe1,0xe2,0xe3,0xe4,0xf0,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa,0xfe,0xff,EOT},
+			{0x00,0x00,0x00,0xff,0x00,0x00,0x00,0x00,0xff,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,EOT}},
+		{0x09, "GPIO 2, GPIO 3, GPIO 4, GPIO 5",
+			{0x30,0xe0,0xe1,0xe2,0xe3,0xe4,0xe5,0xe6,0xe7,0xe9,0xea,0xeb,0xf0,0xf1,0xf2,0xe8,0xee,0xf4,0xf5,0xf6,0xf7,EOT},
+			{0x00,0xff,0x00,0x00,0x00,0xff,0x00,0x00,0x00,0x00,0x00,0x00,0xff,0x00,0x00,0x00,0x00,0xff,0x00,0x00,0x00,EOT}},
+		{0x0a, "ACPI",
+			{0xe0,0xe1,0xe2,0xe3,0xe4,0xe5,0xe6,0xe7,0xe9,0xec,0xed,0xee,0xf0,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,0xfc,0xfe,EOT},
+			{0x01,0x00,0x00,0x00,0x00,0x02,0x1a,0x00,0x00,0x00,0x01,0x00,0x10,0x5e,0x00,0x00,0x00,0x00,0xc0,0x80,0x00,EOT}},
+		{0x0b, "Hardware Monitor, Front Panel LED",
+			{0x30,0x60,0x61,0x62,0x63,0x64,0x65,0x70,0xe0,0xe1,0xe2,0xe3,0xe4,0xe5,0xe6,0xe7,0xed,0xf0,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa,EOT},
+			{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x99,0x99,0x99,0x99,0x99,0xa8,0x00,0xff,0x81,0x00,0x10,0x00,0x87,0x47,0x00,0x00,EOT}},
+		{0x0d, "BCLK, WDT2, WDT_MEM",
+			{0xe1,0xe2,0xe3,0xe7,0xf0,0xf3,EOT},
+			{0x00,0x01,0xff,0x10,0x00,0x00,EOT}},
+		{0x0e, "CIR Wake-Up",
+			{0x30,0x60,0x61,0x70,0xf0,0xf1,0xf4,0xf6,0xf7,0xf8,0xf9,0xfa,EOT},
+			{0x00,0x00,0x00,0x00,0x02,0x1f,0x00,0x17,0x0b,0x00,0x07,0x00,EOT}},
+		{0x0f, "GPIO Push-Pull or Open-Drain selection",
+			{0xe0,0xe1,0xe2,0xe3,0xe4,0xe5,0xe6,0xe7,0xe9,0xf0,0xf1,0xf2,EOT},
+			{0xff,0xff,0xff,0xff,0xff,0xff,0x0f,0xff,0xff,0x9d,0x04,0x00,EOT}},
+		{0x11, "PGPIO, RI PSOUT Wake-Up",
+			{0xe0,0xe1,0xe2,0xee,EOT},
+			{0x08,0x00,0x00,0x00,EOT}},
+		{0x12, "LED control",
+			{0xe0,0xe4,0xe5,0xe6,0xe7,0xea,0xeb,0xec,0xed,0xef,EOT},
+			{0x00,0x00,0x00,0x00,0x00,0x10,0x00,0x00,0x00,0x40,EOT}},
+		{0x14, "Port 80 UART",
+			{0xe0,0xe1,0xe2,0xe3,0xe4,EOT},
+			{0x80,0x00,0x00,0x10,0x00,EOT}},
+		{0x15, "LED Control 2",
+			{0xf0,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa,EOT},
+			{0xff,0x7f,0x00,0x06,0x05,0x17,0x00,0x0f,0x10,0x06,0x05,EOT}},
+		{0x16, "Deep Sleep",
+			{0x30,0xe0,0xe1,0xe2,0xe3,0xf3,0xf4,0xf5,0xf8,EOT},
+			{0xa0,0x20,0x04,0x05,0x01,0x80,0x01,0x00,0x20,EOT}},
+		{EOT}}},
 	{0xd451, "NCT6797D (experimental)", {
 		{NOLDN, NULL,
 			{0x07,0x10,0x11,0x13,0x14,0x1a,0x1b,0x1c,0x1d,0x20,0x21,0x22,0x24,0x25,0x26,0x27,0x28,0x2a,0x2b,0x2c,0x2d,0x2f,EOT},