misc: Bulk upgrade dependencies

In particular update for the vmm-sys-util upgrade and all the other
dependent packages. This requires an updated forked version of
kvm-bindings (due to updated vfio-ioctls) but allowed the removal of our
forked version of kvm-ioctls.

The changes to the API from kvm-ioctls and vmm-sys-util required some
other minor changes to the code.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>

vmm/src/cpu.rs

@@ -1611,7 +1611,8 @@ mod tests {
         let mut msrs = MsrEntries::from_entries(&[MsrEntry {
             index: msr_index::MSR_IA32_MISC_ENABLE,
             ..Default::default()
-        }]);
+        }])
+        .unwrap();
 
         // get_msrs returns the number of msrs that it succeed in reading. We only want to read 1
         // in this test case scenario.