Mark the AMD Am29LV008BB chip as fully tested

Thanks Mattias Mattsson <vitplister@gmail.com> for the report.
http://www.flashrom.org/pipermail/flashrom/2011-July/007423.html

Corresponding to flashrom svn r1421.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
diff --git a/flashchips.c b/flashchips.c
index d7a1b9b..7e7f47d 100644
--- a/flashchips.c
+++ b/flashchips.c
@@ -428,7 +428,7 @@
 		.total_size	= 1024,
 		.page_size	= 64 * 1024, /* unused */
 		.feature_bits	= FEATURE_ADDR_2AA | FEATURE_SHORT_RESET,
-		.tested		= TEST_UNTESTED,
+		.tested		= TEST_OK_PREW,
 		.probe		= probe_jedec,
 		.probe_timing	= TIMING_ZERO,
 		.block_erasers	=