netfilter: Move linux/types.h inclusions outside of #ifdef __KERNEL__

Greg Steuck <[e-mail]> points out that some of the netfilter
headers can't be used in userspace without including linux/types.h
first. The headers include their own linux/types.h include statements,
these are stripped by make headers-install because they are inside
#ifdef __KERNEL__ however. Move them out to fix this.

Reported and Tested by Greg Steuck.

Signed-off-by: Patrick McHardy <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

include/linux/netfilter.h

···
 
 #ifdef __KERNEL__
 #include <linux/init.h>
-#include <linux/types.h>
 #include <linux/skbuff.h>
 #include <linux/net.h>
 #include <linux/netdevice.h>
···
 #include <linux/list.h>
 #include <net/net_namespace.h>
 #endif
+#include <linux/types.h>
 #include <linux/compiler.h>
 
 /* Responses from hook functions. */

include/linux/netfilter_arp/arp_tables.h

···
 
 #ifdef __KERNEL__
 #include <linux/if.h>
-#include <linux/types.h>
 #include <linux/in.h>
 #include <linux/if_arp.h>
 #include <linux/skbuff.h>
 #endif
+#include <linux/types.h>
 #include <linux/compiler.h>
 #include <linux/netfilter_arp.h>
 

include/linux/netfilter_ipv4/ip_tables.h

···
 
 #ifdef __KERNEL__
 #include <linux/if.h>
-#include <linux/types.h>
 #include <linux/in.h>
 #include <linux/ip.h>
 #include <linux/skbuff.h>
 #endif
+#include <linux/types.h>
 #include <linux/compiler.h>
 #include <linux/netfilter_ipv4.h>
 

include/linux/netfilter_ipv6/ip6_tables.h

···
 
 #ifdef __KERNEL__
 #include <linux/if.h>
-#include <linux/types.h>
 #include <linux/in6.h>
 #include <linux/ipv6.h>
 #include <linux/skbuff.h>
 #endif
+#include <linux/types.h>
 #include <linux/compiler.h>
 #include <linux/netfilter_ipv6.h>