[PATCH] eal: fix msvc conditional compile of rte atomic thread fence

[Morten Brørup]

> From: Tyler Retzlaff [mailto:roretzla at linux.microsoft.com]
> Sent: Tuesday, 7 November 2023 21.00
> 
> MSVC does not expose legacy atomics. When the legacy atomics were
> excluded rte_atomic_thread_fence was also unintentionally excluded
> 
> Adjust the conditional compilation check to expose
> rte_atomic_thread_fence.
> 
> Fixes: 27da6a123414 ("eal: hide legacy atomics API for MSVC")
> 
> Signed-off-by: Tyler Retzlaff <roretzla at linux.microsoft.com>
> ---

Acked-by: Morten Brørup <mb at smartsharesystems.com>