net/bnx2x: fix mempool name length

net/bnx2x: fix mempool name length

This patch fixes following error:
   EAL: Detected 36 lcore(s)
   EAL: Probing VFIO support...
   PMD: bnxt_rte_pmd_init() called for (null)
   EAL: PCI device 0000:08:00.0 on NUMA socket 0
   EAL:   probe driver: 14e4:16a1 rte_bnx2x_pmd
   EAL: PCI device 0000:08:00.1 on NUMA socket 0
   EAL:   probe driver: 14e4:16a1 rte_bnx2x_pmd
   Lcore 0: RX port 0
   Lcore 1: RX port 1
   Initializing port 0... EAL: Error - exiting with code: 1
     Cause: Cannot configure device: err=-6, port=0

Fixes: 540a2110 ("bnx2x: driver core")
Fixes: 85cf0079 ("mem: avoid memzone/mempool/ring name truncation")

Signed-off-by: Rasesh Mody <rasesh.mody@qlogic.com>