mb/google/herobrine: Create zombie variant

Create the zombie variant of the herobrine 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:249180463
BRANCH=None
TEST=util/abuild/abuild -p none -t google/herobrine -x -a
make sure the build includes GOOGLE_ZOMBIE

Signed-off-by: Maulik Vaghela <maulikvaghela@google.com>
Change-Id: Ifecf0a6323b20012defbf14bd16ce2f1f41f4714
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68303
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Bob Moragues <moragues@google.com>
Reviewed-by: Shelley Chen <shchen@google.com>

src/mainboard/google/herobrine/Kconfig

@@ -58,6 +58,7 @@ config MAINBOARD_PART_NUMBER
 	default "Villager" if BOARD_GOOGLE_VILLAGER
 	default "Evoker" if BOARD_GOOGLE_EVOKER
 	default "Zoglin" if BOARD_GOOGLE_ZOGLIN
+	default "Zombie" if BOARD_GOOGLE_ZOMBIE
 
 config DRIVER_TPM_I2C_BUS
 	depends on I2C_TPM

src/mainboard/google/herobrine/Kconfig.name

@@ -34,6 +34,10 @@ config BOARD_GOOGLE_ZOGLIN
 	bool "-> Zoglin"
 	select BOARD_GOOGLE_HEROBRINE_COMMON
 
+config BOARD_GOOGLE_ZOMBIE
+	bool "->  Zombie"
+	select BOARD_GOOGLE_HEROBRINE_COMMON
+
 endif
 
 comment "(Herobrine requires 'Allow QC blobs repository')"