This is really gross.

If a user decides to forego a make depend during "make buildkernel",
they should get what they deserve if no previous make depend has
been run for that kernel.  Instead, the build process includes
special instructions to unconditionally rebuild aicasm.  When aicasm
moved to its own directory, this hack broke.

Correct the hack until a get buy off on killing it.

Makefile.inc1

@@ -393,8 +393,8 @@ buildkernel:
 		    config ${CONFIGARGS} -d ${KRNLOBJDIR}/${_kernel} ${_kernel}
 .endif
 	cd ${KRNLOBJDIR}/${_kernel}; \
-		MAKESRCPATH=${KRNLSRCDIR}/dev/aic7xxx \
-		    ${MAKE} -f ${KRNLSRCDIR}/dev/aic7xxx/Makefile
+		MAKESRCPATH=${KRNLSRCDIR}/dev/aic7xxx/aicasm \
+		    ${MAKE} -f ${KRNLSRCDIR}/dev/aic7xxx/aicasm/Makefile
 .if !defined(NO_KERNELDEPEND)
 	cd ${KRNLOBJDIR}/${_kernel}; \
 	    ${WMAKEENV} MACHINE=${MACHINE} ${MAKE} KERNEL=${INSTKERNNAME} depend