target-i386: reorder fields in cpu/msr_hyperv_hypercall subsection

The subsection already exists in one well-known enterprise Linux
distribution, but for some strange reason the fields were swapped
when forward-porting the patch to upstream.

Limit headaches for said enterprise Linux distributor when the
time will come to rebase their version of QEMU.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Message-id: 1396452782-21473-1-git-send-email-pbonzini@redhat.com
Reviewed-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

target-i386/machine.c

@@ -569,8 +569,8 @@ static const VMStateDescription vmstate_msr_hypercall_hypercall = {
     .minimum_version_id = 1,
     .minimum_version_id_old = 1,
     .fields      = (VMStateField []) {
-        VMSTATE_UINT64(env.msr_hv_hypercall, X86CPU),
         VMSTATE_UINT64(env.msr_hv_guest_os_id, X86CPU),
+        VMSTATE_UINT64(env.msr_hv_hypercall, X86CPU),
         VMSTATE_END_OF_LIST()
     }
 };