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: b9a214b ("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>

Author: mattrope

drivers/gpu/drm/xe/tests/xe_pci.c

@@ -66,6 +66,7 @@ KUNIT_ARRAY_PARAM(platform, cases, xe_pci_fake_data_desc);
 
 /**
  * xe_pci_fake_data_gen_params - Generate struct xe_pci_fake_data parameters
+ * @test: test context object
  * @prev: the pointer to the previous parameter to iterate from or NULL
  * @desc: output buffer with minimum size of KUNIT_PARAM_DESC_SIZE
  *
@@ -242,6 +243,7 @@ KUNIT_ARRAY_PARAM(pci_id, pciidlist, xe_pci_id_kunit_desc);
 
 /**
  * xe_pci_graphics_ip_gen_param - Generate graphics struct xe_ip parameters
+ * @test: test context object
  * @prev: the pointer to the previous parameter to iterate from or NULL
  * @desc: output buffer with minimum size of KUNIT_PARAM_DESC_SIZE
  *
@@ -266,6 +268,7 @@ EXPORT_SYMBOL_IF_KUNIT(xe_pci_graphics_ip_gen_param);
 
 /**
  * xe_pci_media_ip_gen_param - Generate media struct xe_ip parameters
+ * @test: test context object
  * @prev: the pointer to the previous parameter to iterate from or NULL
  * @desc: output buffer with minimum size of KUNIT_PARAM_DESC_SIZE
  *
@@ -290,6 +293,7 @@ EXPORT_SYMBOL_IF_KUNIT(xe_pci_media_ip_gen_param);
 
 /**
  * xe_pci_id_gen_param - Generate struct pci_device_id parameters
+ * @test: test context object
  * @prev: the pointer to the previous parameter to iterate from or NULL
  * @desc: output buffer with minimum size of KUNIT_PARAM_DESC_SIZE
  *
@@ -376,6 +380,7 @@ EXPORT_SYMBOL_IF_KUNIT(xe_pci_fake_device_init);
 
 /**
  * xe_pci_live_device_gen_param - Helper to iterate Xe devices as KUnit parameters
+ * @test: test context object
  * @prev: the previously returned value, or NULL for the first iteration
  * @desc: the buffer for a parameter name
  *