[PATCH 04/17] arch, mm: move definition of node_data to generic code

[Davidlohr Bueso]

On Tue, 16 Jul 2024, Mike Rapoport wrote:\n
>From: "Mike Rapoport (Microsoft)" <rppt at kernel.org>
>
>Every architecture that supports NUMA defines node_data in the same way:
>
>	struct pglist_data *node_data[MAX_NUMNODES];
>
>No reason to keep multiple copies of this definition and its forward
>declarations, especially when such forward declaration is the only thing
>in include/asm/mmzone.h for many architectures.
>
>Add definition and declaration of node_data to generic code and drop
>architecture-specific versions.
>
>Signed-off-by: Mike Rapoport (Microsoft) <rppt at kernel.org>

Nice cleanup.

Acked-by: Davidlohr Bueso <dave at stgolabs.net>