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lib: utils/irqchip: Automatically delegate T-HEAD PLIC access
The T-HEAD PLIC implementation requires setting a delegation bit to allow access from S-mode. Now that the T-HEAD PLIC has its own compatible string, set this bit automatically from the PLIC driver, instead of reaching into the PLIC's MMIO space from another driver. Signed-off-by: Samuel Holland <samuel@sholland.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
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