Merge remote-tracking branch 'remotes/mcayland/tags/qemu-openbios-signed' into staging

OpenBIOS: switch over to official OpenBIOS git repo

# gpg: Signature made Tue 12 Jul 2016 19:09:57 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:
  OpenBIOS: switch over to official OpenBIOS git repo

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

openbios @ 36785d7b

-Subproject commit 422b916649aa0db8c5edadccb22387b3e807e3b2
+Subproject commit 36785d7b59726beca320a0b99cfa0a903782c6f3