bhyve: svm (amd-v) update

[Andriy Gapon]

It seems that the bhyve_svm branch is a bit behind the latest interface changes
in head.  Is anyone working on sync-ing up the branch with the head?

Some examples:
- change of init method in vmm_ops
- addition of resume, vlapic_init and vlapic_cleanup methods to vmm_ops
- replacement of lapic_pending_intr and lapic_intr_accepted with
vlapic_pending_intr and vlapic_intr_accepted
- changes in struct vm_exit
- VMEXIT_EPT_FAULT ==> VMEXIT_NESTED_FAULT

Thanks!
-- 
Andriy Gapon