seabios: update from snapshot to final 1.15.0 release (no code changes).

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Merge tag 'seabios-20211203-pull-request' of git://git.kraxel.org/qemu into staging

seabios: update from snapshot to final 1.15.0 release (no code changes).

# gpg: Signature made Fri 03 Dec 2021 12:55:34 AM PST
# 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]

* tag 'seabios-20211203-pull-request' of git://git.kraxel.org/qemu:
  seabios: update binaries to 1.15.0
  seabios: update submodule to 1.15.0

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

roms/seabios

@@ -1 +1 @@
-Subproject commit 64f37cc530f144e53c190c9e8209a51b58fd5c43
+Subproject commit 2dd4b9b3f84019668719344b40dba79d681be41c