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/ftmac100.c b/drivers/net/ftmac100.c
index bd94f83..1fc7da9 100644
--- a/drivers/net/ftmac100.c
+++ b/drivers/net/ftmac100.c
@@ -246,7 +246,7 @@
 	memset (dev, 0, sizeof (*dev));
 	memset (priv, 0, sizeof (*priv));
 
-	sprintf (dev->name, "FTMAC100");
+	strcpy(dev->name, "FTMAC100");
 	dev->iobase	= CONFIG_FTMAC100_BASE;
 	dev->init	= ftmac100_init;
 	dev->halt	= ftmac100_halt;