ci: Bump qemu version
Move to qemu version powernv-6.1.
set -e
set -vx
-git clone --depth=1 -b powernv-6.0 git://github.com/open-power/qemu.git
+git clone --depth=1 -b powernv-6.1 git://github.com/open-power/qemu.git
cd qemu
git submodule update --init dtc
export CC="ccache gcc"
