CI: Bump the Qemu we build for CI testing
set -e
set -vx
-git clone --depth=1 -b qemu-powernv-for-skiboot-5 git://github.com/open-power/qemu.git
+git clone --depth=1 -b qemu-powernv-for-skiboot-6 git://github.com/open-power/qemu.git
cd qemu
git submodule update --init dtc
export CC="ccache gcc"
