ports-mgmt/packagekit: Chase consolkit move

Chase the consolekit port move committed in r447399 (See Also: r447400)
causing INDEX failure:

make_index: /home/indexbuild/tindex/ports/ports-mgmt/packagekit: no entry for /home/indexbuild/tindex/ports/sysutils/consolekit

Reported by: cperciva (subsequent to indexbuild report)