add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/ide/cmd64x.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * cmd64x.c: Enable interrupts at initialization time on Ultra/PCI machines.
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  *           Due to massive hardware bugs, UltraDMA is only supported