netfilter: uapi: fix linux/netfilter/nf_osf.h userspace compilation errors

Move inclusion of <linux/ip.h> and <linux/tcp.h> from
linux/netfilter/xt_osf.h to linux/netfilter/nf_osf.h to fix
the following linux/netfilter/nf_osf.h userspace compilation errors:

/usr/include/linux/netfilter/nf_osf.h:59:24: error: 'MAX_IPOPTLEN' undeclared here (not in a function)
struct nf_osf_opt opt[MAX_IPOPTLEN];
/usr/include/linux/netfilter/nf_osf.h:64:17: error: field 'ip' has incomplete type
struct iphdr ip;
/usr/include/linux/netfilter/nf_osf.h:65:18: error: field 'tcp' has incomplete type
struct tcphdr tcp;

Fixes: bfb15f2a95cb ("netfilter: extract Passive OS fingerprint infrastructure from xt_osf")
Signed-off-by: Dmitry V. Levin <[e-mail]>
Signed-off-by: Pablo Neira Ayuso <[e-mail]>

include/uapi/linux/netfilter/nfnetlink_osf.h

···
 #define _NF_OSF_H
 
 #include <linux/types.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
 
 #define MAXGENRELEN	32
 

include/uapi/linux/netfilter/xt_osf.h

···
 #define _XT_OSF_H
 
 #include <linux/types.h>
-#include <linux/ip.h>
-#include <linux/tcp.h>
 #include <linux/netfilter/nfnetlink_osf.h>
 
 #define XT_OSF_GENRE		NF_OSF_GENRE