Hopefully fix the "aicasm" build-tool issue when using ${KERNSRCDIR} different from ${.CURDIR}.
Hopefully fix the "aicasm" build-tool issue when using ${KERNSRCDIR}
different from ${.CURDIR}.

Reported by:	jhb

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