Backport riscv kconfig for v6.6

[Andreas Schwab]

On Dez 11 2023, Nam Cao wrote:

> Without this, it is not possible to configure the kernel with SPI drivers
> for the Visionfive 2 board.

Is it?  There is nothing that stops you from just enabling it.

-- 
Andreas Schwab, SUSE Labs, schwab at suse.de
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