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/board/freescale/t1040qds/eth.c b/board/freescale/t1040qds/eth.c
index 8bf34fa..872e6e8 100644
--- a/board/freescale/t1040qds/eth.c
+++ b/board/freescale/t1040qds/eth.c
@@ -162,7 +162,7 @@
 	bus->read = t1040_qds_mdio_read;
 	bus->write = t1040_qds_mdio_write;
 	bus->reset = t1040_qds_mdio_reset;
-	sprintf(bus->name, t1040_qds_mdio_name_for_muxval(muxval));
+	strcpy(bus->name, t1040_qds_mdio_name_for_muxval(muxval));
 
 	pmdio->realbus = miiphy_get_dev_by_name(realbusname);