[PATCH i-g-t] tests/intel-ci/xe: Block kms_display_modes@mst-extended-mode-negative test

[Mohammed Thasleem <mohammed.thasleem@intel.com>]

This negative test was designed to validate ENOSPC errors with 2k-4k or
4k-4k monitors connected via MST, addressing bandwidth issues in MST
configurations.

However, it is not applicable to current bandwidths, as DP 1.4 supports
4 × 8.1 Gbps, and DP 2.1 has increased this to 4 × 20 Gbps, offering
significantly greater display capabilities.

Signed-off-by: Mohammed Thasleem <mohammed.thasleem@intel.com>
---
 tests/intel-ci/xe.blocklist.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/intel-ci/xe.blocklist.txt b/tests/intel-ci/xe.blocklist.txt
index 80ceba9a5..06506f590 100644
--- a/tests/intel-ci/xe.blocklist.txt
+++ b/tests/intel-ci/xe.blocklist.txt
@@ -92,6 +92,7 @@ igt@kms_sysfs_edid_timing
 # KMS: Non-Intel tests
 ##################################################################
 igt@kms_cursor_legacy@modeset-atomic-cursor-hotspot
+igt@kms_display_modes@mst-extended-mode-negative
 ##################################################################
 # SR-IOV tests too stressful or time-consuming
 # to execute all dynamic subtests at once.
-- 
2.25.1