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/video.c b/arch/powerpc/cpu/mpc8xx/video.c
index 15cee3f..c35406d 100644
--- a/arch/powerpc/cpu/mpc8xx/video.c
+++ b/arch/powerpc/cpu/mpc8xx/video.c
@@ -981,11 +981,11 @@
 		 U_BOOT_VERSION, U_BOOT_DATE, U_BOOT_TIME);
 	video_drawstring (VIDEO_INFO_X, VIDEO_INFO_Y, info);
 
-	sprintf (info, "(C) 2002 DENX Software Engineering");
+	strcpy(info, "(C) 2002 DENX Software Engineering");
 	video_drawstring (VIDEO_INFO_X, VIDEO_INFO_Y + VIDEO_FONT_HEIGHT,
 					info);
 
-	sprintf (info, "    Wolfgang DENK, wd@denx.de");
+	strcpy(info, "    Wolfgang DENK, wd@denx.de");
 	video_drawstring (VIDEO_INFO_X, VIDEO_INFO_Y + VIDEO_FONT_HEIGHT * 2,
 					info);