flashchips.c: mark EN25F10 as TEST_OK_PREW

As reported by Wolf Dieter Brandt in his e-mail from 09.Aug.2021.

Change-Id: I0c19f84780e7fa3699fd706f8e105fc5937ba8bf
Signed-off-by: Simon Buhrow <simon.buhrow@posteo.de>
Original-Reviewed-on: https://review.coreboot.org/c/flashrom/+/58031
Original-Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/flashrom-stable/+/70962
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/flashchips.c b/flashchips.c
index bae266c..ee26ee1 100644
--- a/flashchips.c
+++ b/flashchips.c
@@ -4395,7 +4395,7 @@
 		.total_size	= 128,
 		.page_size	= 256,
 		.feature_bits	= FEATURE_WRSR_WREN,
-		.tested		= TEST_UNTESTED,
+		.tested		= TEST_OK_PREW,
 		.probe		= probe_spi_rdid,
 		.probe_timing	= TIMING_ZERO,
 		.block_erasers	=