UAPI: Unexport part of linux/ppp-comp.h

Unexport part of linux/ppp-comp.h as userspace can't make use of that bit.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Paul Mackerras <paulus@samba.org>
cc: David Miller <davem@davemloft.net>

include/linux/ppp-comp.h

@@ -10,6 +10,8 @@
 #ifndef _NET_PPP_COMP_H
 #define _NET_PPP_COMP_H
 
+#ifdef __KERNEL__
+
 struct module;
 
 /*
@@ -98,6 +100,8 @@ struct compressor {
 #define DECOMP_ERROR		-1	/* error detected before decomp. */
 #define DECOMP_FATALERROR	-2	/* error detected after decomp. */
 
+#endif /* __KERNEL__ */
+
 /*
  * CCP codes.
  */