xilinx_ethlite: tweaked naming of ping-pong props

Changed "txpingpong" prop to "tx-ping-pong". Same for rx. This is done to
make the property name exactly match what is output by the xilinx tools for
this IP.
Signed-off-by: NPeter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

hw/xilinx.h

@@ -40,8 +40,8 @@ xilinx_ethlite_create(NICInfo *nd, target_phys_addr_t base, qemu_irq irq,
 
     dev = qdev_create(NULL, "xilinx,ethlite");
     qdev_set_nic_properties(dev, nd);
-    qdev_prop_set_uint32(dev, "txpingpong", txpingpong);
-    qdev_prop_set_uint32(dev, "rxpingpong", rxpingpong);
+    qdev_prop_set_uint32(dev, "tx-ping-pong", txpingpong);
+    qdev_prop_set_uint32(dev, "rx-ping-pong", rxpingpong);
     qdev_init_nofail(dev);
     sysbus_mmio_map(sysbus_from_qdev(dev), 0, base);
     sysbus_connect_irq(sysbus_from_qdev(dev), 0, irq);

hw/xilinx_ethlite.c

@@ -227,8 +227,8 @@ static int xilinx_ethlite_init(SysBusDevice *dev)
 }
 
 static Property xilinx_ethlite_properties[] = {
-    DEFINE_PROP_UINT32("txpingpong", struct xlx_ethlite, c_tx_pingpong, 1),
-    DEFINE_PROP_UINT32("rxpingpong", struct xlx_ethlite, c_rx_pingpong, 1),
+    DEFINE_PROP_UINT32("tx-ping-pong", struct xlx_ethlite, c_tx_pingpong, 1),
+    DEFINE_PROP_UINT32("rx-ping-pong", struct xlx_ethlite, c_rx_pingpong, 1),
     DEFINE_NIC_PROPERTIES(struct xlx_ethlite, conf),
     DEFINE_PROP_END_OF_LIST(),
 };