[HVM][SVM] Don't BUG when VMRUN exitcode==-1, just crash the domain.

[HVM][SVM] Don't BUG when VMRUN exitcode==-1, just crash the domain.

If there's any consistency problems in the VMCB, the VMRUN will return
an exitcode of -1 to indicate that the guest-state is "bad". Prior to
this change, it would cause the hypervisor to reboot. This is not at
all necessary - the VMCB may be bad, but the system is most likely
still intact. [In particular, a guest could cause a crash of the
system by setting up PAE with an invalid set of PDPE's, which is
definitely not a desired behaviour]

Now also print out the VMCB, as that MAY help identify the cause of
the exitcode of -1.

Signed-off-by: Mats Petersson <mats.petersson@amd.com>