add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/kernel/power/energy_model.c
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@@ -85,10 +85,7 @@
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 static void em_debug_remove_pd(struct device *dev)
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 {
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-	struct dentry *debug_dir;
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-
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-	debug_dir = debugfs_lookup(dev_name(dev), rootdir);
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-	debugfs_remove_recursive(debug_dir);
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+	debugfs_lookup_and_remove(dev_name(dev), rootdir);
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 }
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 static int __init em_debug_init(void)