qemuValidateDomainDefPCIFeature: Fix validation logic
qemuValidateDomainDefPCIFeature: Fix validation logic

The error that "acpi-bridge-hotplug" is not supported would be triggered
only if both the ICH9 and PIIX don't support the capability and the
machine is q35. This makes no sense.

We want to check that the appropriate platform supports the appropriate
feature.

Fixes: 7300ccc9b3e
Signed-off-by: Peter Krempa <2cf5c04c61aa466e4a47bfedc747d17279c72ffc@redhat.com>
Reviewed-by: Ján Tomko <4cab11cfb98d3c937327354a78eb07dbb6ee2bc6@redhat.com>

jfehlig/libvirt,crobinso/libvirt,nertpinx/libvirt,zippy2/libvirt,nertpinx/libvirt,libvirt/libvirt,zippy2/libvirt,olafhering/libvirt,olafhering/libvirt,libvirt/libvirt,olafhering/libvirt,nertpinx/libvirt,nertpinx/libvirt,jfehlig/libvirt,zippy2/libvirt,zippy2/libvirt,crobinso/libvirt,jfehlig/libvirt,crobinso/libvirt,libvirt/libvirt,crobinso/libvirt,jfehlig/libvirt,libvirt/libvirt,olafhering/libvirt,nertpinx/libvirt