flashchips: Mark Macronix MX25L1635D as tested

Tested probe, read, erase and write with a FTDI FT2232H successfully.

Change-Id: I7421b7e36e687ea2ffff494c00157976db73ac43
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Original-Reviewed-on: https://review.coreboot.org/c/flashrom/+/49489
Original-Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/flashrom-stable/+/70945
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 6916bd9..9c9ce66 100644
--- a/flashchips.c
+++ b/flashchips.c
@@ -8440,7 +8440,7 @@
 		.page_size	= 256,
 		/* OTP: 64B total; enter 0xB1, exit 0xC1 */
 		.feature_bits	= FEATURE_WRSR_WREN | FEATURE_OTP,
-		.tested		= TEST_UNTESTED,
+		.tested		= TEST_OK_PREW,
 		.probe		= probe_spi_rdid,
 		.probe_timing	= TIMING_ZERO,
 		.block_erasers	=