net: introduce common dev_page_is_reusable()

A bunch of drivers test the page before reusing/recycling for two
common conditions:
 - if a page was allocated under memory pressure (pfmemalloc page);
 - if a page was allocated at a distant memory node (to exclude
   slowdowns).

Introduce a new common inline for doing this, with likely() already
folded inside to make driver code a bit simpler.

Suggested-by: David Rientjes <[email protected]>
Suggested-by: Jakub Kicinski <[email protected]>
Cc: John Hubbard <[email protected]>
Signed-off-by: Alexander Lobakin <[email protected]>
Reviewed-by: Jesse Brandeburg <[email protected]>
Acked-by: David Rientjes <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>

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