pci: allocate and set length pci product name
pci: allocate and set length pci product name

Original fix for this issue, allocated sufficent memory but didn't set the
vector length correctly.

Type: fix
Fixes: 7d0ca6af0

Signed-off-by: Ray Kinsella <64a50932049ddff830412e0fd9edb30198bf17f3@ashroe.eu>
Change-Id: I3c8ce310d7a6266840a2d8d6b8620254acd042ab

chrisy/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp