config: revert the max queues per port to 256
config: revert the max queues per port to 256

The previous commit changed the size and the offsets of struct rte_eth_dev,
so it is an ABI breakage.
I revert it, and will send a deprecation notice for this.

Fixes: 1a1109404e70 ("config: increase max queues per port")

Signed-off-by: Jijiang Liu <10b95deab7df654d0c21c8c98b54c9a1ecf2a5c0@intel.com>

tsphillips/dpdk-fork,venkynv/dpdk-mirror,john-mcnamara-intel/dpdk,venkynv/dpdk-mirror,john-mcnamara-intel/dpdk,msune/dpdk,venkynv/dpdk-mirror,mixja/dpdk,msune/dpdk,mixja/dpdk,john-mcnamara-intel/dpdk,msune/dpdk,john-mcnamara-intel/dpdk,mixja/dpdk,tsphillips/dpdk-fork,msune/dpdk,tsphillips/dpdk-fork,tsphillips/dpdk-fork,venkynv/dpdk-mirror,mixja/dpdk