floss: Add pdl-runtime dependency for hcidoc_packets

Starting from v0.2 pdl-compiler needs dependency to pdl-runtime.

Bug: 316267954
Test: m -j
Test: ./build.py --target=utils
Flag: EXEMPT floss only changes
Change-Id: Icef76a8c37a17a687ecc91c95f29cd6a421f186e