drm/amd/display: Select KUnit helpers

[WHAT]
DRM_KUNIT_TEST_HELPERS has no prompt, so it can only be turned on by a
select.  DRM_AMD_DC_KUNIT_TEST merely depended on it, which forced the
amdgpu_dm KUnit config to enable CONFIG_DRM_KUNIT_TEST as well and drag
in the entire core DRM test suite.

[HOW]
Select DRM_KUNIT_TEST_HELPERS from DRM_AMD_DC_KUNIT_TEST, matching what
DRM_KUNIT_TEST and DRM_TTM_KUNIT_TEST already do, and drop
CONFIG_DRM_KUNIT_TEST from the amdgpu_dm kunitconfig.  The amdgpu_dm
tests now build standalone and a run executes only the amdgpu_dm suites.

Assisted-by: Copilot:Claude-Opus-5
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

0 files changed, 0 insertions, 0 deletions