Compile linux_genassym.c with ordinary ${CFLAGS}.  The (small) need for -U_KERNEL became negative when all all the genassym.c's were converted to be cross-built.
Compile linux_genassym.c with ordinary ${CFLAGS}.  The (small) need for
-U_KERNEL became negative when all all the genassym.c's were converted
to be cross-built.

Use "genassym ... > ${.TARGET}", not "genassym -o $@ ...", so that
genassym(1) doesn't need to support -o.

Removed duplicate -D_KERNEL from flags for compiling linux_locore.s.

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