Introduce vm_manager_device_type for crosvm

Introduce hypervisor-generic type for VM managers:
vm_manager_device_type.

Bug: 274758531
Change-Id: I0937e2c717ff973eeb61543bd05a7dcc2e5dc19c
Suggested-by: Steven Moreland <smoreland@google.com>
Signed-off-by: Elliot Berman <quic_eberman@quicinc.com>
diff --git a/private/vendor_init.te b/private/vendor_init.te
index acbd84e..1680f96 100644
--- a/private/vendor_init.te
+++ b/private/vendor_init.te
@@ -19,7 +19,7 @@
 allow vendor_init {
   dev_type
   -keychord_device
-  -kvm_device
+  -vm_manager_device_type
   -port_device
   -lowpan_device
   -hw_random_device