[astro] 0.20210119.2.1338 u-boot source

GitOrigin-RevId: 9768d963ff46648bb8b183d8e29a7abc19f68920
Change-Id: I7546ab102cb3ee77ef262b760f9be1b9cf21536a
Reviewed-on: https://turquoise-internal-review.googlesource.com/c/third_party/u-boot/+/372314
Reviewed-by: Varun Sharma <vars@google.com>