mb/google/octopus: Create Foob variant

This commit creates a foob variant for Octopus. The initial settings
override the baseboard was copied from variant phaser.

BUG=b:144890301
BRANCH=octopus
TEST=emerge-octopus coreboot

Signed-off-by: Peichao Wang <peichao.wang@bitland.corp-partner.google.com>
Change-Id: Ibcdda4dd0846612f5e98ab454db7144c1caf0507
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37456
Reviewed-by: Henry Sun <henrysun@google.com>
Reviewed-by: Marco Chen <marcochen@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/octopus/Kconfig.name

@@ -70,3 +70,9 @@ config BOARD_GOOGLE_DOOD
 	select BASEBOARD_OCTOPUS_LAPTOP
 	select BOARD_GOOGLE_BASEBOARD_OCTOPUS
 	select NHLT_DA7219 if INCLUDE_NHLT_BLOBS
+
+config BOARD_GOOGLE_FOOB
+	bool "->  Foob"
+	select BASEBOARD_OCTOPUS_LAPTOP
+	select BOARD_GOOGLE_BASEBOARD_OCTOPUS
+	select NHLT_DA7219 if INCLUDE_NHLT_BLOBS