seabios: update to master branch snapshot.

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Merge remote-tracking branch 'remotes/kraxel/tags/seabios-20211022-pull-request' into staging

seabios: update to master branch snapshot.

# gpg: Signature made Fri 22 Oct 2021 05:14:00 AM PDT
# gpg:                using RSA key A0328CFFB93A17A79901FE7D4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]

* remotes/kraxel/tags/seabios-20211022-pull-request:
  update seabios binaries
  update seabios to master branch snapshot

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

roms/seabios

@@ -1 +1 @@
-Subproject commit 155821a1990b6de78dde5f98fa5ab90e802021e0
+Subproject commit 64f37cc530f144e53c190c9e8209a51b58fd5c43