config/arm: add values for native armv7

config/arm: add values for native armv7

Armv7 native build fails with this error:
../config/meson.build:364:1: ERROR: Problem encountered:
Number of CPU cores not specified.

This is because RTE_MAX_LCORE is not set. We also need to set
RTE_MAX_NUMA_NODES in armv7 native builds.

Fixes: 8ef09fdc506b ("build: add optional NUMA and CPU counts detection")
Cc: stable@dpdk.org
Signed-off-by: Juraj Linkeš <juraj.linkes@pantheon.tech>
Acked-by: Ruifeng Wang <ruifeng.wang@arm.com>