Beautify flash chip ID verbose printout a little, always use %02x

Corresponding to flashrom svn r390 and coreboot v2 svn r3895.

Signed-off-by: Peter Stuge <peter@stuge.se>
Acked-by: Peter Stuge <peter@stuge.se>
diff --git a/m29f400bt.c b/m29f400bt.c
index bc70449..d0b040d 100644
--- a/m29f400bt.c
+++ b/m29f400bt.c
@@ -75,7 +75,7 @@
 
 	myusec_delay(10);
 
-	printf_debug("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2);
+	printf_debug("%s: id1 0x%02x, id2 0x%02x\n", __FUNCTION__, id1, id2);
 
 	if (id1 == flash->manufacture_id && id2 == flash->model_id)
 		return 1;