dpdk socket-mem handling optimizations

 - introduces default socket-mem size of 512 MB per socket
 - default socket-mem value is applied to all discovered CPU sockets
 - fixes bug when < 1024 socket-mem parameter is specified
 - for socket-mem < 1024 code prefers 2 MB pages
 - improves handling of manualy specified socket-mem values

Change-Id: I9ef848108d7dd1228fbd82a5be49eb5277a93683
Signed-off-by: Damjan Marion <damarion@cisco.com>
3 files changed