add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/include/xen/arm/hypervisor.h
..
..
@@ -19,8 +19,6 @@
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 	return PARAVIRT_LAZY_NONE;
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 }
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-extern const struct dma_map_ops *xen_dma_ops;
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-
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 #ifdef CONFIG_XEN
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 void __init xen_early_init(void);
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 #else