[net-next] rxrpc: Simplify the allocation of slab caches

[Markus Elfring]

> Use the new KMEM_CACHE() macro instead of direct kmem_cache_create
> to simplify the creation of SLAB caches.

* Please replace the word “new” by a reference to the commit 0a31bd5f2bbb6473ef9d24f0063ca91cfa678b64
  ("KMEM_CACHE(): simplify slab cache creation").

  See also related background information from 2007-05-06.

* Would you like to take another look at possibilities to group
  similar source code transformations into patch series?


Regards,
Markus