This update for open-lldp fixes the following issue:

- Update from version 1.0.1+63.f977e67 to version v1.0.1+64.29d12e584af1

- Prevent double definition of `ETH_P_LLDP` when building on new kernels (bsc#1156545)

This update was imported from the SUSE:SLE-15-SP1:Update update project.