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/sh_eth.c b/drivers/net/sh_eth.c
index a320b4d..443a4da 100644
--- a/drivers/net/sh_eth.c
+++ b/drivers/net/sh_eth.c
@@ -560,7 +560,7 @@
 	dev->recv = sh_eth_recv;
 	eth->port_info[eth->port].dev = dev;
 
-	sprintf(dev->name, SHETHER_NAME);
+	strcpy(dev->name, SHETHER_NAME);
 
 	/* Register Device to EtherNet subsystem  */
 	eth_register(dev);