Change in coreboot[master]: Update vboot submodule to upstream main

[Thejaswani Putta (Code Review)]

Thejaswani Putta has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/57322 )

Change subject: Update vboot submodule to upstream main
......................................................................

Update vboot submodule to upstream main

Updating from commit id ccc56f4:
    vboot: add x86 SHA256 ext support

to commit id 4423276:
    crossystem: add a hwid override mechanism from chromeos-config

Signed-off-by: Thejaswani Putta 
Change-Id: I7bd73b9f6c0492f96c336b61e21ecae37b8f3606
---
M 3rdparty/vboot
1 file changed, 1 insertion(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/22/57322/1

diff --git a/3rdparty/vboot b/3rdparty/vboot
index ccc56f4..4423276 160000
--- a/3rdparty/vboot
+++ b/3rdparty/vboot
@@ -1 +1 @@
-Subproject commit ccc56f46c51fa9d0c2b3c086ace97c14fe887c32
+Subproject commit 4423276b4607cf1b3975eaff57d17869c0620ecd