seabios: fix submodule

Commit "36f96c4 target-i386: Add support to migrate vcpu's TSC rate"
updates roms/seabios, appearently by mistake.  Revert this.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1453460391-7664-1-git-send-email-kraxel@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

diff --git a/roms/seabios b/roms/seabios
index 33fbe13a3e2a01e0ba1087a8feed801a0451db21..01a84bea2d28a19d2405c1ecac4bdef17683cc0c 160000 (submodule)
--- a/roms/seabios
+++ b/roms/seabios
@@ -1 +1 @@
-Subproject commit 33fbe13a3e2a01e0ba1087a8feed801a0451db21
+Subproject commit 01a84bea2d28a19d2405c1ecac4bdef17683cc0c