update seabios to 1.16.0

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Merge remote-tracking branch 'remotes/kraxel/tags/seabios-20220307-pull-request' into staging

update seabios to 1.16.0

# gpg: Signature made Mon 07 Mar 2022 11:02:40 GMT
# 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]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/seabios-20220307-pull-request:
  update seabios binaries to 1.16.0
  update seabios submodule to 1.16.0

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

roms/seabios

@@ -1 +1 @@
-Subproject commit 6a62e0cb0dfe9cd28b70547dbea5caf76847c3a9
+Subproject commit d239552ce7220e448ae81f41515138f7b9e3c4db