mb/google/nissa: Create sundance variant

Create the sundance variant of nissa reference board by copying the
template files to a new directory named for the variant.

Due to new_variant.py limitation that repo can no longer be used in
inside, created this CL manually following google suggestion.

BUG=b:328505938
TEST=util/abuild/abuild -p none -t google/brya -x -a
make sure the build includes GOOGLE_SUNDANCE

Change-Id: Ia8ba318f18d2cac69898687311631778e61bf2ea
Signed-off-by: Leo Chou <leo.chou@lcfc.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81347
Reviewed-by: Derek Huang <derekhuang@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Shou-Chieh Hsu <shouchieh@google.com>

src/mainboard/google/brya/Kconfig

@@ -382,6 +382,9 @@ config BOARD_GOOGLE_PUJJO
 	select HAVE_WWAN_POWER_SEQUENCE
 	select INTEL_GMA_HAVE_VBT
 
+config BOARD_GOOGLE_SUNDANCE
+	select BOARD_GOOGLE_BASEBOARD_NISSA
+
 config BOARD_GOOGLE_QUANDISO
 	select BOARD_GOOGLE_BASEBOARD_NISSA
 	select CHROMEOS_WIFI_SAR if CHROMEOS
@@ -713,6 +716,7 @@ config MAINBOARD_PART_NUMBER
 	default "Bujia" if BOARD_GOOGLE_BUJIA
 	default "Tivviks" if BOARD_GOOGLE_TIVVIKS
 	default "Yavista" if BOARD_GOOGLE_YAVISTA
+	default "Sundance" if BOARD_GOOGLE_SUNDANCE
 
 config VARIANT_DIR
 	default "brya0" if BOARD_GOOGLE_BRYA0
@@ -772,6 +776,7 @@ config VARIANT_DIR
 	default "bujia" if BOARD_GOOGLE_BUJIA
 	default "nivviks" if BOARD_GOOGLE_TIVVIKS
 	default "yavista" if BOARD_GOOGLE_YAVISTA
+	default "sundance" if BOARD_GOOGLE_SUNDANCE
 
 config VBOOT
 	select VBOOT_EARLY_EC_SYNC if !BOARD_GOOGLE_BASEBOARD_NISSA

src/mainboard/google/brya/Kconfig.name

@@ -172,3 +172,6 @@ config BOARD_GOOGLE_BUJIA
 
 config BOARD_GOOGLE_YAVISTA
 	bool "->  Yavista"
+
+config BOARD_GOOGLE_SUNDANCE
+	bool "->  Sundance"

src/mainboard/google/brya/variants/sundance/include/variant/ec.h

@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef __VARIANT_EC_H__
+#define __VARIANT_EC_H__
+
+#include <baseboard/ec.h>
+
+#endif

src/mainboard/google/brya/variants/sundance/include/variant/gpio.h

@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef VARIANT_GPIO_H
+#define VARIANT_GPIO_H
+
+#include <baseboard/gpio.h>
+
+#endif

src/mainboard/google/brya/variants/sundance/memory/Makefile.mk

@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+# This is an auto-generated file. Do not edit!!
+# Add memory parts in mem_parts_used.txt and run spd_tools to regenerate.
+
+SPD_SOURCES = placeholder

src/mainboard/google/brya/variants/sundance/memory/dram_id.generated.txt

@@ -0,0 +1 @@
+DRAM Part Name                 ID to assign

src/mainboard/google/brya/variants/sundance/memory/mem_parts_used.txt

@@ -0,0 +1,11 @@
+# This is a CSV file containing a list of memory parts used by this variant.
+# One part per line with an optional fixed ID in column 2.
+# Only include a fixed ID if it is required for legacy reasons!
+# Generated IDs are dependent on the order of parts in this file,
+# so new parts must always be added at the end of the file!
+#
+# Generate an updated Makefile.mk and dram_id.generated.txt by running the
+# part_id_gen tool from util/spd_tools.
+# See util/spd_tools/README.md for more details and instructions.
+
+# Part Name

src/mainboard/google/brya/variants/sundance/overridetree.cb

@@ -0,0 +1,6 @@
+chip soc/intel/alderlake
+
+        device domain 0 on
+        end
+
+end