aarch64: Less strict CPU checking for armv7 guests on aarch64
aarch64: Less strict CPU checking for armv7 guests on aarch64

Current versions of qemu/libvirt on f33 don't appear to allow armv7
guests to start with strict cpu checking on armv8/aarch64 host
OSs. Lossen up the host-passthrough checking.

Signed-off-by: Jeremy Linton <5fd20647ba5fc84c5334ca74068125bbbd19ac4e@arm.com>

nullr0ute/oz,nullr0ute/oz