drm/lima: print process name and pid when task error

When error task list is full, print the process info where
the error task come from for debug usage.
Tested-by: Bhushan Shah <bshah@kde.org>
Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200421133551.31481-3-yuq825@gmail.com

drivers/gpu/drm/lima/lima_sched.c

@@ -285,7 +285,8 @@ static void lima_sched_build_error_task_list(struct lima_sched_task *task)
 	mutex_lock(&dev->error_task_list_lock);
 
 	if (dev->dump.num_tasks >= lima_max_error_tasks) {
-		dev_info(dev->dev, "fail to save task state: error task list is full\n");
+		dev_info(dev->dev, "fail to save task state from %s pid %d: "
+			 "error task list is full\n", ctx->pname, ctx->pid);
 		goto out;
 	}