app/proc_info: fix port id type
app/proc_info: fix port id type

Fixes: f8244c6399d9 ("ethdev: increase port id range")

Signed-off-by: Zhiyong Yang <fbdb847fac8e5e50b588eb93d9ff9fd811b7568c@intel.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk