emulators/qemu: Update version 7.0.0=>7.1.0

• Unbreak on latest HEAD [1]

Users who want to stick with 7.0.X branch please check UPDATING or use
qemu6. As previous qemu comes with three flavors: the default with X11
support, -nox11 without X11 support and -tools which installs only a
subset of entire qemu.

Reported by: jhb [1]
Relnotes: https://wiki.qemu.org/ChangeLog/7.1