drm/xe/kunit: Fix kerneldoc for parameterized tests

Kunit's generate_params() was recently updated to take an additional
test context parameter.  Xe's IP and platform parameter generators were
updated accordingly at the same time, but the new parameter was not
added to the functions' kerneldoc, resulting in the following warnings:

   Warning: drivers/gpu/drm/xe/tests/xe_pci.c:78 function parameter 'test' not described in 'xe_pci_fake_data_gen_params'
   Warning: drivers/gpu/drm/xe/tests/xe_pci.c:254 function parameter 'test' not described in 'xe_pci_graphics_ip_gen_param'
   Warning: drivers/gpu/drm/xe/tests/xe_pci.c:278 function parameter 'test' not described in 'xe_pci_media_ip_gen_param'
   Warning: drivers/gpu/drm/xe/tests/xe_pci.c:302 function parameter 'test' not described in 'xe_pci_id_gen_param'
   Warning: drivers/gpu/drm/xe/tests/xe_pci.c:390 function parameter 'test' not described in 'xe_pci_live_device_gen_param'
   5 warnings as errors

Document the new parameter to eliminate the warnings and make CI happy.

Fixes: b9a214b5 ("kunit: Pass parameterized test context to generate_params()")
Reviewed-by: Shuicheng Lin <shuicheng.lin@intel.com>
Link: https://lore.kernel.org/r/20251013153014.2362879-2-matthew.d.roper@intel.com


Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
(cherry picked from commit 89e347f8a70165d1e8d88a93d875da7742c902ce)
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>