Update OpenBIOS images
# gpg: Signature made Fri 15 Jul 2016 15:22:36 BST
# gpg: using RSA key 0x5BC2C56FAE0F321F
# gpg: Good signature from "Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>"
# Primary key fingerprint: CC62 1AB9 8E82 200D 915C C9C4 5BC2 C56F AE0F 321F
* remotes/mcayland/tags/qemu-openbios-signed:
Update OpenBIOS images to
b747b6a built from submodule.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>