This fixes authorship of commits 5cbd51a5 and friends, where the
qemu-ppc mailing list rewrote the "From:" field in the corresponding
patches.  See commit 3bd2608d ("maint: Add .mailmap entries for
patches claiming list authorship") for explanation.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-ID: <20230927143815.3397386-8-eblake@redhat.com>