[PATCH v1] riscv: make ZONE_DMA32 optional

[Drew Fustini]

On Sun, Oct 06, 2024 at 10:55:39AM +0000, Vladimir Kondratiev wrote:
> It is not necessary any RISCV platform has ZONE_DMA32.
> Platforms that not support ZONE_DMA32 should set
> CONFIG_NONPORTABLE because lack of ZONE_DMA32
> makes such platform non-portable indeed

I think requiring CONFIG_NONPORTABLE is a good idea. However, it seems
this patch was sent as a reply to the existing discussion thread.

Thanks,
Drew