scripts/common: Use proper format of the pci address for pciconf

If devices are not picked up from the cache, iter_all_pci_class_code()
will pick lspci in first instance to iterate over the pci bus. If said
tool is installed on FreeBSD, it will return BDFs in format which won't
be understood by pciconf (which is used to determine which driver given
device is bound to):

  pciconf: cannot parse selector pci0000:00:06.0

To make sure pciconf understands the argument it's given, simply
replace .function with :function (0000:00:06.0 -> 0000:00:06:0).

Change-Id: I59d4f7050c65df99626a3d449aa0a5bb122d4081
Signed-off-by: Michal Berger <michalx.berger@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/4665


Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>