[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/ircomm/ircomm_lmp.c b/net/irda/ircomm/ircomm_lmp.c
index 959874b..c8e0d89 100644
--- a/net/irda/ircomm/ircomm_lmp.c
+++ b/net/irda/ircomm/ircomm_lmp.c
@@ -81,7 +81,7 @@
 	
 	/* Any userdata supplied? */
 	if (userdata == NULL) {
-		tx_skb = alloc_skb(64, GFP_ATOMIC);
+		tx_skb = alloc_skb(LMP_MAX_HEADER, GFP_ATOMIC);
 		if (!tx_skb)
 			return -ENOMEM;
 
@@ -115,7 +115,7 @@
 	IRDA_DEBUG(0, "%s()\n", __FUNCTION__ );
 
         if (!userdata) {
-		tx_skb = alloc_skb(64, GFP_ATOMIC);
+		tx_skb = alloc_skb(LMP_MAX_HEADER, GFP_ATOMIC);
 		if (!tx_skb)
 			return -ENOMEM;