mb/google/trogdor: Add new vaviant mrbland

New boards introduced to trogdor family.

BUG=b:191800434
BRANCH=none
TEST=make

Change-Id: I93b74e79188bd0cc36c8b48e552230ae0d6f593a
Signed-off-by: Zanxi Chen <chenzanxi@huaqin.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55782
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

Documentation/security/vboot/list_vboot.md

@@ -172,6 +172,7 @@
 - Homestar
 - Lazor
 - Marzipan
+- Mrbland
 - Pazquel
 - Pompom
 - Trogdor

src/mainboard/google/trogdor/Kconfig

@@ -67,6 +67,7 @@ config MAINBOARD_PART_NUMBER
 	default "Homestar" if BOARD_GOOGLE_HOMESTAR
 	default "Lazor" if BOARD_GOOGLE_LAZOR
 	default "Marzipan" if BOARD_GOOGLE_MARZIPAN
+	default "Mrbland" if BOARD_GOOGLE_MRBLAND
 	default "Pazquel" if BOARD_GOOGLE_PAZQUEL
 	default "Pompom" if BOARD_GOOGLE_POMPOM
 	default "Trogdor" if BOARD_GOOGLE_TROGDOR

src/mainboard/google/trogdor/Kconfig.name

@@ -22,6 +22,10 @@ config BOARD_GOOGLE_MARZIPAN
 	bool "->  Marzipan"
 	select BOARD_GOOGLE_TROGDOR_COMMON
 
+config BOARD_GOOGLE_MRBLAND
+	bool "->  Mrbland"
+	select BOARD_GOOGLE_TROGDOR_COMMON
+
 config BOARD_GOOGLE_PAZQUEL
 	bool "->  Pazquel"
 	select BOARD_GOOGLE_TROGDOR_COMMON