[S] Change in coreboot[master]: mb/google/nissa: Add SD_BOOT fw_config

[Reka Norman (Code Review)]

Reka Norman has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/69541 )

Change subject: mb/google/nissa: Add SD_BOOT fw_config
......................................................................

mb/google/nissa: Add SD_BOOT fw_config

Some nissa devices want to disable boot from SD card. Since nissa has a
single shared depthcharge target, add a program-wide fw_config to allow
disabling it.

BUG=b:253003881
TEST=With depthcharge change, set SD_BOOT_DISABLE on nivviks and check
SD card is not initialised in depthcharge.

Change-Id: I1a3a533e4e74e48d9ce4a9678b812cb62ce2066b
Signed-off-by: Reka Norman 
---
M src/mainboard/google/brya/variants/baseboard/nissa/devicetree.cb
1 file changed, 22 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/41/69541/1

diff --git a/src/mainboard/google/brya/variants/baseboard/nissa/devicetree.cb b/src/mainboard/google/brya/variants/baseboard/nissa/devicetree.cb
index d002db6..24b5b70 100644
--- a/src/mainboard/google/brya/variants/baseboard/nissa/devicetree.cb
+++ b/src/mainboard/google/brya/variants/baseboard/nissa/devicetree.cb
@@ -1,4 +1,8 @@
 fw_config
+	field SD_BOOT 29
+		option SD_BOOT_ENABLE		0
+		option SD_BOOT_DISABLE		1
+	end
    field STORAGE 30 31
    	option STORAGE_EMMC		0
    	option STORAGE_NVME		1