crypto/scheduler: fix build with gcc 8.2

crypto/scheduler: fix build with gcc 8.2

build_error:

drivers/crypto/scheduler/scheduler_pmd.c: In function ‘parse_name_arg’:
drivers/crypto/scheduler/scheduler_pmd.c:372:2: error: ‘strncpy’
specified bound 64 equals destination size [-Werror=stringop-truncation]
  strncpy(params->name, value, RTE_CRYPTODEV_NAME_MAX_LEN);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
strncpy may result a not null-terminated string,
replaced it with strlcpy

Fixes: 503e9c5afb38 ("crypto/scheduler: register as vdev driver")
Cc: stable@dpdk.org
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>