Fix GCC format-security errors and convert sprintfs.

With format-security errors turned on, GCC picks up the use of sprintf with
a format parameter not being a string literal.

Simple uses of sprintf are also converted to use strcpy.

Signed-off-by: Ben Whitten <ben.whitten@gmail.com>
Acked-by: Wolfgang Denk <wd@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/net/dm9000x.c b/drivers/net/dm9000x.c
index 3c41cec..93c6667 100644
--- a/drivers/net/dm9000x.c
+++ b/drivers/net/dm9000x.c
@@ -630,7 +630,7 @@
 	dev->halt = dm9000_halt;
 	dev->send = dm9000_send;
 	dev->recv = dm9000_rx;
-	sprintf(dev->name, "dm9000");
+	strcpy(dev->name, "dm9000");
 
 	eth_register(dev);