Update vboot submodule to upstream main

Updating from commit id 9d4053df:
2020-11-20 01:51:08 +0000 - (Revert "Reland: Clean up implicit fall through.")

to commit id 57c0c5be:
2021-04-09 11:45:39 +0800 - (cgpt: Move all GPT on SPI-NOR infra behind a flag)

Signed-off-by: Bora Guvendik <bora.guvendik@intel.com>
Change-Id: Id50a892f12ff3c4147c422c98b640ac047143128
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52453
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

3rdparty/vboot

@@ -1 +1 @@
-Subproject commit 48195e5878006ac2cf74cb7f02953ab06c68202d
+Subproject commit 57c0c5be50767c3f86c648bf33e15955cc349f25