Get socketmodule to build after adding netlink support.

Modules/socketmodule.c

@@ -3993,7 +3993,9 @@ init_socket(void)
 	PyModule_AddIntConstant(m, "NETLINK_FIREWALL", NETLINK_FIREWALL);
 	PyModule_AddIntConstant(m, "NETLINK_TCPDIAG", NETLINK_TCPDIAG);
 	PyModule_AddIntConstant(m, "NETLINK_NFLOG", NETLINK_NFLOG);
+#ifdef NETLINK_XFRM
 	PyModule_AddIntConstant(m, "NETLINK_XFRM", NETLINK_XFRM);
+#endif
 	PyModule_AddIntConstant(m, "NETLINK_ARPD", NETLINK_ARPD);
 	PyModule_AddIntConstant(m, "NETLINK_ROUTE6", NETLINK_ROUTE6);
 	PyModule_AddIntConstant(m, "NETLINK_IP6_FW", NETLINK_IP6_FW);

Modules/socketmodule.h

@@ -33,6 +33,9 @@
 #endif
 
 #ifdef HAVE_LINUX_NETLINK_H
+# ifdef HAVE_ASM_TYPES_H
+#  include <asm/types.h>
+# endif
 # include <linux/netlink.h>
 #else
 #  undef AF_NETLINK