[XFRM]: Move xfrm_nl to xfrm_state.c from xfrm_user.c

xfrm_user could be modular, and since generic code uses this symbol
now...
Signed-off-by: David S. Miller <davem@davemloft.net>

net/xfrm/xfrm_state.c

@@ -20,6 +20,9 @@
 #include <linux/module.h>
 #include <asm/uaccess.h>
 
+struct sock *xfrm_nl;
+EXPORT_SYMBOL(xfrm_nl);
+
 u32 sysctl_xfrm_aevent_etime = XFRM_AE_ETIME;
 u32 sysctl_xfrm_aevent_rseqth = XFRM_AE_SEQT_SIZE;
 /* Each xfrm_state may be linked to two tables:

net/xfrm/xfrm_user.c

@@ -28,8 +28,6 @@
 #include <net/netlink.h>
 #include <asm/uaccess.h>
 
-struct sock *xfrm_nl;
-
 static int verify_one_alg(struct rtattr **xfrma, enum xfrm_attr_type_t type)
 {
 	struct rtattr *rt = xfrma[type - 1];
@@ -1974,5 +1972,4 @@ module_init(xfrm_user_init);
 module_exit(xfrm_user_exit);
 MODULE_LICENSE("GPL");
 MODULE_ALIAS_NET_PF_PROTO(PF_NETLINK, NETLINK_XFRM);
-EXPORT_SYMBOL(xfrm_nl);