irqchip/sifive-plic: Add thead,c900-plic support
thead,c900-plic would mask IRQ with readl(claim), so it needn't
mask/unmask which needed in RISC-V PLIC.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
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thead,c900-plic would mask IRQ with readl(claim), so it needn't
mask/unmask which needed in RISC-V PLIC.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>