mem: take reserved hugepages into account
mem: take reserved hugepages into account

Some applications reserve hugepages for later use,
but DPDK doesn't take reserved pages into account
when calculating number of available number of hugepages.

This patch adds reading from "resv_hugepages" file
in addition to "free_hugepages".

Signed-off-by: Anatoly Burakov <814e00d8f6e4e81b7ccc7e3e5a0bfec0078f0203@intel.com>
Acked-by: Thomas Monjalon <ee2fa8b2681c737f775687e475dcbf2028a412f1@6wind.com>

phermansson/dpdk,phermansson/dpdk,phermansson/dpdk,phermansson/dpdk