Add SEPolicy for network devices with composite disks

With help from adelva@. Changing the set of virtual disks moves the
network pci device around, affecting sepolicy on this. With all the
virtual disks being combined into one composite disk, this should be a
longer-term fix(tm).

Bug: 133432409
Test: Run qemu, crosvm with composite disks and check selinux audit logs
Change-Id: Ief0082c8f0421201772704f5efb075d693645d56
1 file changed