NFC r206000: Make ng_ppp fulfill upper protocol stack layers alignment requirements on platforms with strict alignment constraints. This fixes kernel panics on arm and probably other architectures.
NFC r206000:
Make ng_ppp fulfill upper protocol stack layers alignment requirements
on platforms with strict alignment constraints.
This fixes kernel panics on arm and probably other architectures.

PR:             sparc64/80410, sparc/118932, sparc/113556

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase