[NET]: uninline skb_trim, de-bloats

Allyesconfig (v2.6.24-mm1):
-10976  209 funcs, 123 +, 11099 -, diff: -10976 --- skb_trim

Without number of debug related CONFIGs (v2.6.25-rc2-mm1):
-7360  192 funcs, 131 +, 7491 -, diff: -7360 --- skb_trim
skb_trim                      |  +42

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 1baf4d4..ff72145d 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1158,21 +1158,7 @@
 	skb_set_tail_pointer(skb, len);
 }
 
-/**
- *	skb_trim - remove end from a buffer
- *	@skb: buffer to alter
- *	@len: new length
- *
- *	Cut the length of a buffer down by removing data from the tail. If
- *	the buffer is already under the length specified it is not modified.
- *	The skb must be linear.
- */
-static inline void skb_trim(struct sk_buff *skb, unsigned int len)
-{
-	if (skb->len > len)
-		__skb_trim(skb, len);
-}
-
+extern void skb_trim(struct sk_buff *skb, unsigned int len);
 
 static inline int __pskb_trim(struct sk_buff *skb, unsigned int len)
 {