linux_mtd: Mark Opaque chip as tested for WP

Since linux_mtd supports write-protect, its probe function needs
to mark Opaque chip as tested for WP. Programmers which are
opaque masters are responsible for populating flashchip#tested
struct in probe function.

Without the patch, any operation running via linux_mtd displays
a message "This flash part has status UNTESTED for operations: WP".
With the patch, the message is not displayed anymore.

BUG=b:258755442
BRANCH=none
TEST=flashrom -p host on ARM dut
Found Programmer flash chip "Opaque flash chip"
 (8192 kB, Programmer-specific) on host.
No operations were specified.

Change-Id: Icc0521c28555a93f26ce66bdbeaa68590f10c358
Signed-off-by: Anastasia Klimchuk <aklm@chromium.org>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/69518
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-by: Sergii Dmytruk <sergii.dmytruk@3mdeb.com>
---
M linux_mtd.c
1 file changed, 31 insertions(+), 1 deletion(-)

diff --git a/linux_mtd.c b/linux_mtd.c
index b8aee06..495db9a 100644
--- a/linux_mtd.c
+++ b/linux_mtd.c
@@ -179,7 +179,7 @@
 
 	if (data->no_erase)
 		flash->chip->feature_bits |= FEATURE_NO_ERASE;
-	flash->chip->tested = TEST_OK_PREW;
+	flash->chip->tested = TEST_OK_PREWB;
 	flash->chip->total_size = data->total_size / 1024;	/* bytes -> kB */
 	flash->chip->block_erasers[0].eraseblocks[0].size = data->erasesize;
 	flash->chip->block_erasers[0].eraseblocks[0].count =

