net: ns8382x: Add initialized eth_device structure

ns8382x driver does not have write_hwaddr function.
However, eth stuff executes write_hwaddr function
because eth_device structure has not been initialized.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
CC: Ben Warren <biggerbadderben@gmail.com>
diff --git a/drivers/net/ns8382x.c b/drivers/net/ns8382x.c
index 198f73d..45402cc 100644
--- a/drivers/net/ns8382x.c
+++ b/drivers/net/ns8382x.c
@@ -340,6 +340,11 @@
 		}
 
 		dev = (struct eth_device *) malloc(sizeof *dev);
+		if (!dev) {
+			printf("ns8382x: Can not allocate memory\n");
+			break;
+		}
+		memset(dev, 0, sizeof(*dev));
 
 		sprintf(dev->name, "dp8382x#%d", card_number);
 		dev->iobase = bus_to_phys(iobase);