mb/google/skyrim: Create markarth variant

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

(Auto-Generated by create_coreboot_variant.sh version 4.5.0.)

BUG=b:262092858
BRANCH=None
TEST=util/abuild/abuild -p none -t google/skyrim -x -a
make sure the build includes GOOGLE_MARKARTH

Change-Id: Ifbace841ca56d8659aaffdc31fb2bc4367d96f82
Signed-off-by: Chao Gui <chaogui@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71610
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Dtrain Hsu <dtrain_hsu@compal.corp-partner.google.com>

src/mainboard/google/skyrim/Kconfig

@@ -91,6 +91,7 @@ config MAINBOARD_PART_NUMBER
 	default "Morthal" if BOARD_GOOGLE_MORTHAL
 	default "Frostflow" if BOARD_GOOGLE_FROSTFLOW
 	default "Crystaldrift" if BOARD_GOOGLE_CRYSTALDRIFT
+	default "Markarth" if BOARD_GOOGLE_MARKARTH
 
 config OVERRIDE_DEVICETREE
 	string
@@ -103,6 +104,7 @@ config VARIANT_DIR
 	default "morthal" if BOARD_GOOGLE_MORTHAL
 	default "frostflow" if BOARD_GOOGLE_FROSTFLOW
 	default "crystaldrift" if BOARD_GOOGLE_CRYSTALDRIFT
+	default "markarth" if BOARD_GOOGLE_MARKARTH
 
 config VBOOT
 	select EC_GOOGLE_CHROMEEC_SWITCHES

src/mainboard/google/skyrim/Kconfig.name

@@ -26,3 +26,7 @@ config BOARD_GOOGLE_FROSTFLOW
 config BOARD_GOOGLE_CRYSTALDRIFT
 	bool "->  Crystaldrift"
 	select BOARD_GOOGLE_BASEBOARD_SKYRIM
+
+config BOARD_GOOGLE_MARKARTH
+	bool "->  Markarth"
+	select BOARD_GOOGLE_BASEBOARD_SKYRIM

src/mainboard/google/skyrim/variants/markarth/include/variant/ec.h

@@ -0,0 +1,3 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <baseboard/ec.h>

src/mainboard/google/skyrim/variants/markarth/overridetree.cb

@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+chip soc/amd/mendocino
+	device domain 0 on end
+end	# chip soc/amd/mendocino