drm/i915/guc: add intel_guc_state_capture member docs for ads_null_cache and max_mmio_per_node

drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:216: warning: Function parameter or member 'ads_null_cache' not described in 'intel_guc_state_capture'
drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:216: warning: Function parameter or member 'max_mmio_per_node' not described in 'intel_guc_state_capture'
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/c83878163221ed3684a6de5d5e1c5373ddd5c06f.1683041799.git.jani.nikula@intel.com

drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h

@@ -187,6 +187,10 @@ struct intel_guc_state_capture {
 	struct __guc_capture_ads_cache ads_cache[GUC_CAPTURE_LIST_INDEX_MAX]
 						[GUC_CAPTURE_LIST_TYPE_MAX]
 						[GUC_MAX_ENGINE_CLASSES];
+
+	/**
+	 * @ads_null_cache: ADS null cache.
+	 */
 	void *ads_null_cache;
 
 	/**
@@ -202,6 +206,10 @@ struct intel_guc_state_capture {
 	struct list_head cachelist;
 #define PREALLOC_NODES_MAX_COUNT (3 * GUC_MAX_ENGINE_CLASSES * GUC_MAX_INSTANCES_PER_CLASS)
 #define PREALLOC_NODES_DEFAULT_NUMREGS 64
+
+	/**
+	 * @max_mmio_per_node: Max MMIO per node.
+	 */
 	int max_mmio_per_node;
 
 	/**