flashchips: Mark XMC XM25QH256C as TEST_OK_PR

As reported on the mailing list[0] this flashchip was successfully
probed and read with a ch341a programmer.

[0] https://mail.coreboot.org/hyperkitty/list/flashrom@flashrom.org/message/BFBKAJKURZHYQ6OTV3UAA7V5O2ZSJWGN

Change-Id: I68d0315f7b29f27ac84374ea7cc69dca207bbacb
Signed-off-by: Thomas Heijligen <thomas.heijligen@secunet.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/73362
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
---
M flashchips.c
1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/flashchips.c b/flashchips.c
index c24e264..70e9fa9 100644
--- a/flashchips.c
+++ b/flashchips.c
@@ -20359,7 +20359,7 @@
 		.feature_bits	= FEATURE_WRSR_WREN | FEATURE_OTP | FEATURE_4BA_ENTER_WREN |
 				  FEATURE_4BA_EAR_C5C8 | FEATURE_4BA_READ | FEATURE_4BA_FAST_READ |
 				  FEATURE_4BA_WRITE | FEATURE_WRSR2,
-		.tested		= TEST_UNTESTED,
+		.tested		= TEST_OK_PR,
 		.probe		= PROBE_SPI_RDID,
 		.probe_timing	= TIMING_ZERO,
 		.block_erasers	=

