u-boot: update to v2020.10-rc5

Need to step up to a more recent version of U-Boot to make the storing
of U-boot environment variables to work.

Signed-off-by: Joakim Bech <joakim.bech@linaro.org>
1 file changed
tree: ee42d0a98f66c12762e58f048c46942bc32c89ab
  1. default.xml