fix endian lossage in forcedeth

a) if you initialize something with le32_to_cpu(...), then |= it
with host-endian and feed to cpu_to_le32(), it's most definitely
*not* __le32.  As sparse would've told you...

b) the whole sequence is |= cpu_to_le32(host-endian constant)
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

drivers/net/forcedeth.c

@@ -2112,9 +2112,8 @@ static inline void nv_tx_flip_ownership(struct net_device *dev)
 
 	np->tx_pkts_in_progress--;
 	if (np->tx_change_owner) {
-		__le32 flaglen = le32_to_cpu(np->tx_change_owner->first_tx_desc->flaglen);
-		flaglen |= NV_TX2_VALID;
-		np->tx_change_owner->first_tx_desc->flaglen = cpu_to_le32(flaglen);
+		np->tx_change_owner->first_tx_desc->flaglen |=
+			cpu_to_le32(NV_TX2_VALID);
 		np->tx_pkts_in_progress++;
 
 		np->tx_change_owner = np->tx_change_owner->next_tx_ctx;