Grant TUNSETOFFLOAD to crosvm for running ferrochrome

For running ferrochrome with VmLauncherApp, found it requires to grant
TUNSETOFFLOAD to crosvm.

Bug: 340376953
Test: atest MicrodroidTests

Change-Id: Iba251cb72da64d46224751cb97368835f7c0f68c
diff --git a/private/crosvm.te b/private/crosvm.te
index cddab36..0c2acb9 100644
--- a/private/crosvm.te
+++ b/private/crosvm.te
@@ -135,7 +135,7 @@
 is_flag_enabled(RELEASE_AVF_ENABLE_NETWORK, `
     # Allow crosvm to deal with file descriptors of TAP interfaces.
     allow crosvm tun_device:chr_file rw_file_perms;
-    allowxperm crosvm tun_device:chr_file ioctl { TUNGETIFF TUNSETVNETHDRSZ };
+    allowxperm crosvm tun_device:chr_file ioctl { TUNGETIFF TUNSETOFFLOAD TUNSETVNETHDRSZ };
     allow crosvm self:udp_socket create_socket_perms;
     allowxperm crosvm self:udp_socket ioctl SIOCGIFMTU;
     allow crosvm vmnic:fd use;