Only use -mno-apcs-frame if DDB is not in the kernel, as it prevent the backtraces from working.
Only use -mno-apcs-frame if DDB is not in the kernel, as it prevent the
backtraces from working.

MFC After:	3 days

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