RISC-V: Add conditional macro for zone of DMA32
The DMA32 is for 64-bit usage. Signed-off-by:Zong Li <zong@andestech.com> Reviewed-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
Palmer Dabbelt <palmer@sifive.com>
parent
021c9179
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