Update Common NetD SEPolicy to allow Netlink XFRM

In order to perform XFRM operations NetD needs the
ability to both read and write Netlink XFRM messages.

Bug: 34811756
Test: 34812052

Change-Id: I26831c58b24a4c1f344b113f0b5cf47ed2c93fee

public/netd.te

@@ -80,6 +80,9 @@ allow netd netdomain:{
 } { read write getattr setattr getopt setopt };
 allow netd netdomain:fd use;
 
+# give netd permission to read and write netlink xfrm
+allow netd self:netlink_xfrm_socket { create_socket_perms_no_ioctl nlmsg_write nlmsg_read };
+
 ###
 ### Neverallow rules
 ###