[netdrvr] lp486e: fix typo

inside #if 0'd code, but it bugged me.

Really, we should probably just delete the driver.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/lp486e.c b/drivers/net/lp486e.c
index b783a69..393aba9 100644
--- a/drivers/net/lp486e.c
+++ b/drivers/net/lp486e.c
@@ -442,16 +442,16 @@
 		if (rbd) {
 			rbd->pad = 0;
 			rbd->count = 0;
-			rbd->skb = dev_alloc_skb(RX_SKB_SIZE);
+			rbd->skb = dev_alloc_skb(RX_SKBSIZE);
 			if (!rbd->skb) {
 				printk("dev_alloc_skb failed");
 			}
 			rbd->next = rfd->rbd;
 			if (i) {
 				rfd->rbd->prev = rbd;
-				rbd->size = RX_SKB_SIZE;
+				rbd->size = RX_SKBSIZE;
 			} else {
-				rbd->size = (RX_SKB_SIZE | RBD_EL);
+				rbd->size = (RX_SKBSIZE | RBD_EL);
 				lp->rbd_tail = rbd;
 			}