net/bnxt: fix PCI per function stats
net/bnxt: fix PCI per function stats

Fix to use correct value offset for PCI function stats.

Fixes: 5f9374de2a3a ("net/bnxt: add PCI function stats to extended stats")
Cc: stable@dpdk.org

Signed-off-by: Lance Richardson <4e26776f5588f0e1c0c16cd2ddc0e9efc79c5b3a@broadcom.com>
Reviewed-by: Ajit Khaparde <01965fbd61169dc18f3fb5e13de7f67d298f8924@broadcom.com>

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