[PATCH] MAINTAINERS: Update SiFive driver maintainers

[Paul Walmsley]

On Thu, 15 Feb 2024, Samuel Holland wrote:

> Add myself as a maintainer for the various SiFive drivers, since I have
> been performing cleanup activity on these drivers and reviewing patches
> to them for a while now. Remove Palmer as a maintainer, as he is focused
> on overall RISC-V architecture support.
> 
> Collapse some duplicate entries into the main SiFive drivers entry:
>  - Conor is already maintainer of standalone cache drivers as a whole,
>    and these files are also covered by the "sifive" file name regex.
>  - Paul's git tree has not been updated since 2018, and all file names
>    matching the "fu540" pattern also match the "sifive" pattern.
>  - Green has not been active on the LKML for a couple of years.
> 
> Signed-off-by: Samuel Holland <samuel.holland at sifive.com>

Acked-by: Paul Walmsley <paul.walmsley at sifive.com>

- Paul