Merge tag 'dm-pull-5dec21a' of https://source.denx.de/u-boot/custodians/u-boot-dm into next

binman refactoring to improve section handling
bloblist - allow it to be allocated
sandbox config-header cleanup

# gpg: Signature made Sun 05 Dec 2021 10:14:24 PM EST
# gpg:                using RSA key B25C0022AF86A7CC1655B6277F173A3E9008ADE6
# gpg:                issuer "sjg@chromium.org"
# gpg: Good signature from "Simon Glass <sjg@chromium.org>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: B25C 0022 AF86 A7CC 1655  B627 7F17 3A3E 9008 ADE6