e1000: remove unneeded conversion to bool

The '==' expression itself is bool, no need to convert it to bool again.
This fixes the following coccicheck warning:

drivers/net/ethernet/intel/e1000/e1000_main.c:1479:44-49: WARNING:
conversion to bool not needed here
Signed-off-by: NJason Yan <yanaijie@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/intel/e1000/e1000_main.c

@@ -1476,7 +1476,7 @@ static bool e1000_check_64k_bound(struct e1000_adapter *adapter, void *start,
 	if (hw->mac_type == e1000_82545 ||
 	    hw->mac_type == e1000_ce4100 ||
 	    hw->mac_type == e1000_82546) {
-		return ((begin ^ (end - 1)) >> 16) != 0 ? false : true;
+		return ((begin ^ (end - 1)) >> 16) == 0;
 	}
 
 	return true;