ukvm: Select preferred target for AArch64 guest
ukvm: Select preferred target for AArch64 guest

Linux-ARM/KVM provide a API for userspace to select preferred
target for VM. We use this API to select preferred target for
guest.

djwillia/solo5,mato/solo5,Weichen81/solo5,mato/solo5,djwillia/solo5,Solo5/solo5,Weichen81/solo5,Solo5/solo5,mato/solo5,Weichen81/solo5,djwillia/solo5