mb/google/poppy/variants/nami: Use Pantheon VBT

Add new Pantheon sku-id for loading vbt-pantheon.bin

BUG=b:78663963
BRANCH=firmware-nami-10775.B
TEST=Boots to OS and display comes up.
Check the board specific vbt binary loaded.

Change-Id: I1ee156372754ac0e77caae5959a9ca9884de95f4
Signed-off-by: Ivy Jian <ivy_jian@compal.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/27432
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/google/poppy/variants/nami/mainboard.c b/src/mainboard/google/poppy/variants/nami/mainboard.c
index 33d6bf3..8080c94 100644
--- a/src/mainboard/google/poppy/variants/nami/mainboard.c
+++ b/src/mainboard/google/poppy/variants/nami/mainboard.c
@@ -178,6 +178,7 @@
 	switch (sku_id) {
 	case SKU_0_PANTHEON:
 	case SKU_1_PANTHEON:
+	case SKU_2_PANTHEON:
 		return "vbt-pantheon.bin";
 	case SKU_0_VAYNE:
 	case SKU_1_VAYNE: