drm/xe: Store platform name in xe_device.info

We already maintain the platform name as part of the device
descriptor, but in xe_device.info we only store platform enum,
which is not the best for use in any user-facing messages.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240521142257.756-2-michal.wajdeczko@intel.com

drivers/gpu/drm/xe/xe_device_types.h

@@ -221,6 +221,8 @@ struct xe_device {
 
 	/** @info: device info */
 	struct intel_device_info {
+		/** @info.platform_name: platform name */
+		const char *platform_name;
 		/** @info.graphics_name: graphics IP name */
 		const char *graphics_name;
 		/** @info.media_name: media IP name */

drivers/gpu/drm/xe/xe_pci.c

@@ -597,6 +597,7 @@ static int xe_info_init_early(struct xe_device *xe,
 {
 	int err;
 
+	xe->info.platform_name = desc->platform_name;
 	xe->info.platform = desc->platform;
 	xe->info.subplatform = subplatform_desc ?
 		subplatform_desc->subplatform : XE_SUBPLATFORM_NONE;