[IrDA]: Memory allocations cleanups

This patch replaces the bunch of arbitrary 64 and 128 bytes alloc_skb() calls
with more accurate allocation sizes.

Signed-off-by: Samuel Ortiz <samuel@sortiz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/irda/iriap_event.c b/net/irda/iriap_event.c
index da17395..99b18dc 100644
--- a/net/irda/iriap_event.c
+++ b/net/irda/iriap_event.c
@@ -365,7 +365,7 @@
 
 	switch (event) {
 	case IAP_LM_CONNECT_INDICATION:
-		tx_skb = alloc_skb(64, GFP_ATOMIC);
+		tx_skb = alloc_skb(LMP_MAX_HEADER, GFP_ATOMIC);
 		if (tx_skb == NULL) {
 			IRDA_WARNING("%s: unable to malloc!\n", __FUNCTION__);
 			return;