[INET]: Let inet_diag and friends autoload

By adding module aliases to inet_diag, tcp_diag and dccp_diag, we let
them load automatically as needed. This makes tools like "ss" run
faster.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/net.h b/include/linux/net.h
index c136abc..dd79cdb 100644
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -313,6 +313,10 @@
 #define MODULE_ALIAS_NET_PF_PROTO(pf, proto) \
 	MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto))
 
+#define MODULE_ALIAS_NET_PF_PROTO_TYPE(pf, proto, type) \
+	MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto) \
+		     "-type-" __stringify(type))
+
 #ifdef CONFIG_SYSCTL
 #include <linux/sysctl.h>
 extern ctl_table net_table[];