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/arch/powerpc/cpu/mpc8xx/fec.c b/arch/powerpc/cpu/mpc8xx/fec.c
index 2e19603..ea4ab3a 100644
--- a/arch/powerpc/cpu/mpc8xx/fec.c
+++ b/arch/powerpc/cpu/mpc8xx/fec.c
@@ -148,7 +148,7 @@
 		/* for FEC1 make sure that the name of the interface is the same
 		   as the old one for compatibility reasons */
 		if (i == 0) {
-			sprintf (dev->name, "FEC");
+			strcpy(dev->name, "FEC");
 		} else {
 			sprintf (dev->name, "FEC%d",
 				ether_fcc_info[i].ether_index + 1);