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/disk/part_efi.c b/disk/part_efi.c
index 22dfbb1..e1b58c5 100644
--- a/disk/part_efi.c
+++ b/disk/part_efi.c
@@ -281,7 +281,7 @@
 
 	sprintf((char *)info->name, "%s",
 			print_efiname(&gpt_pte[part - 1]));
-	sprintf((char *)info->type, "U-Boot");
+	strcpy((char *)info->type, "U-Boot");
 	info->bootable = is_bootable(&gpt_pte[part - 1]);
 #ifdef CONFIG_PARTITION_UUIDS
 	uuid_bin_to_str(gpt_pte[part - 1].unique_partition_guid.b, info->uuid,