SST39SF512 is tested

Flashrom -V -w: http://paste.flashrom.org/view.php?id=395



Corresponding to flashrom svn r1275.
Signed-off-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>

flashchips.c

@@ -5567,7 +5567,7 @@ struct flashchip flashchips[] = {
 		.total_size	= 64,
 		.page_size	= 4096,
 		.feature_bits	= FEATURE_EITHER_RESET,
-		.tested		= TEST_UNTESTED,
+		.tested		= TEST_PREW,
 		.probe		= probe_jedec,
 		.probe_timing	= 1,			/* 150 ns */
 		.block_erasers	=