[RFC v3 20/26] bus: introduce accessors

[Bruce Richardson]

On Thu, Jul 28, 2022 at 05:26:34PM +0200, David Marchand wrote:
> Add helpers to get a rte_bus object details.
> This will be used externally.
> Internal users may still dereference a rte_bus object.
> 
> Signed-off-by: David Marchand <david.marchand at redhat.com>
> ---
> Changes since RFC v1:
> - changed approach: only external users are updated,
> 
Acked-by: Bruce Richardson <bruce.richardson at intel.com>