Fix pixman build failure.
# gpg: Signature made Mon 15 Sep 2014 07:15:11 BST using RSA key ID
D3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg: aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
* remotes/kraxel/tags/pull-console-
20140915-1:
configure: check for pixman-1 version
pixman: update internal copy to pixman-0.32.6
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>