Since 10 years, memzone allocation is allowed on secondary
processes. Now it's time to update the documentation accordingly.
At the same time, fix mempool, mbuf and ring documentation which rely on
memzones internally.
Bugzilla ID: 1074
Fixes: 916e4f4f4e45 ("memory: fix for multi process support")
Cc: stable@dpdk.org
Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>