mempool: use generic memory syscall wrappers
mempool: use generic memory syscall wrappers

Using generic memory management calls instead of Unix memory management
calls for mempool.

Signed-off-by: Fady Bader <f2127d64ba0b9d3846f67a77c57c078766dd1086@mellanox.com>
Acked-by: Olivier Matz <dfcc1510895413197abb4336e39bb0a3906cba71@6wind.com>
Acked-by: Andrew Rybchenko <ac94ab2a8fe9a9a087f6e24dcbc16626b52c07e8@solarflare.com>
Reviewed-by: Dmitry Kozlyuk <622f8c4298455ea0ac8bf96da29b254c86170938@gmail.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk