Add permissions to allow iface up/down

I need SIOCGIFFLAGS and SIOCSIFFLAGS in order to bring up/down
interfaces with AIDL CAN HAL.

Bug: 260592449
Test: CAN HAL can bring up interfaces
Change-Id: I67edaa857cffdf3c3fc9f3b17aad5879e09c6385
diff --git a/vendor/hal_can_socketcan.te b/vendor/hal_can_socketcan.te
index 7498788..12bb028 100644
--- a/vendor/hal_can_socketcan.te
+++ b/vendor/hal_can_socketcan.te
@@ -9,10 +9,12 @@
 allow hal_can_socketcan self:capability net_admin;
 allow hal_can_socketcan self:netlink_route_socket { create bind write nlmsg_write read };
 
-# Calling if_nametoindex(3) to open CAN sockets
+# See man page for netdevice(7) for more info on ioctls
 allow hal_can_socketcan self:udp_socket { create ioctl };
 allowxperm hal_can_socketcan self:udp_socket ioctl {
     SIOCGIFINDEX
+    SIOCGIFFLAGS
+    SIOCSIFFLAGS
 };
 
 # Communicating with SocketCAN interfaces and bringing them up/down