Mark the following chip as supported

 - Winbond W39V040FA (reported by Guenter <lists@gknw.net>)
   Read (thus also probe), write (thus also erase), and verify tested.
   http://www.flashrom.org/pipermail/flashrom/2010-May/003078.html



Corresponding to flashrom svn r1020.
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>

flashchips.c

@@ -6087,7 +6087,7 @@ struct flashchip flashchips[] = {
 		.total_size	= 512,
 		.page_size	= 64 * 1024,
 		.feature_bits	= FEATURE_REGISTERMAP | FEATURE_EITHER_RESET,
-		.tested		= TEST_UNTESTED,
+		.tested		= TEST_OK_PREW,
 		.probe		= probe_jedec,
 		.probe_timing	= 10, 
 		.block_erasers	=