dep: Rely on latest kvm-ioctls crate

In order to have access to the newly added signal_msi() function
from the kvm-ioctls crate, this commit updates the version of the
kvm-ioctls to the latest one.

Because set_user_memory_region() has been swtiched to "unsafe", we
also need to handle this small change in our cloud-hypervisor code
directly.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>

vmm/src/vm.rs

@@ -573,7 +573,7 @@ impl<'a> Vm<'a> {
                 };
 
                 // Safe because the guest regions are guaranteed not to overlap.
-                fd.set_user_memory_region(mem_region)
+                unsafe { fd.set_user_memory_region(mem_region) }
             })
             .map_err(|_| Error::GuestMemory(MmapError::NoMemoryRegion))?;
 
@@ -838,7 +838,7 @@ pub fn test_vm() {
         };
 
         // Safe because the guest regions are guaranteed not to overlap.
-        vm_fd.set_user_memory_region(mem_region)
+        unsafe { vm_fd.set_user_memory_region(mem_region) }
     })
     .expect("Cannot configure guest memory");
     mem.write_slice(&code, load_addr)