Make benchmarks also link against libpciaccess

Make benchmarks also link against libpciaccess

Fixes Solaris build error on build of intel_upload_blit_large:

Undefined			first referenced
 symbol  			    in file
pci_device_probe                    ../lib/.libs/libintel_tools.a(intel_pci.o)  (symbol belongs to implicit dependency libpciaccess.so.0)
pci_system_init                     ../lib/.libs/libintel_tools.a(intel_pci.o)  (symbol belongs to implicit dependency libpciaccess.so.0)
pci_device_find_by_slot             ../lib/.libs/libintel_tools.a(intel_pci.o)  (symbol belongs to implicit dependency libpciaccess.so.0)
ld: fatal: symbol referencing errors. No output written to intel_upload_blit_large

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>