mb/google/asurada: Add config for spherion

BUG=b:178440482
TEST=emerge-asurada coreboot
BRANCH=none

Change-Id: Ica09b73f97509db065c93c6be757c0d77c9b7a87
Signed-off-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49956
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
diff --git a/src/mainboard/google/asurada/Kconfig b/src/mainboard/google/asurada/Kconfig
index 5f5ed85..c497839 100644
--- a/src/mainboard/google/asurada/Kconfig
+++ b/src/mainboard/google/asurada/Kconfig
@@ -37,6 +37,7 @@
 	string
 	default "Asurada" if BOARD_GOOGLE_ASURADA
 	default "Hayato" if BOARD_GOOGLE_HAYATO
+	default "Spherion" if BOARD_GOOGLE_SPHERION
 
 config DRIVER_TPM_SPI_BUS
 	hex
diff --git a/src/mainboard/google/asurada/Kconfig.name b/src/mainboard/google/asurada/Kconfig.name
index 6f287e5..8349092 100644
--- a/src/mainboard/google/asurada/Kconfig.name
+++ b/src/mainboard/google/asurada/Kconfig.name
@@ -7,3 +7,7 @@
 config BOARD_GOOGLE_HAYATO
 	bool "->  Hayato"
 	select BOARD_GOOGLE_ASURADA_COMMON
+
+config BOARD_GOOGLE_SPHERION
+	bool "->  Spherion"
+	select BOARD_GOOGLE_ASURADA_COMMON