Add "CFLAGS+= -I${MAKESRCPATH}" when running under the kernel build,

otherwise #include "aicasm.h" etc do not work with gcc-3 and later.

sys/dev/aic7xxx/aicasm/Makefile

@@ -23,6 +23,9 @@ DEPENDFILE=
 .endif
 
 CFLAGS+= -I/usr/include -I.
+.ifdef MAKESRCPATH
+CFLAGS+= -I${MAKESRCPATH}
+.endif
 NOMAN=	noman
 YFLAGS= -b ${.TARGET:R} ${.TARGET:M*macro*:S/$(.TARGET)/-p mm/} -d
 LFLAGS+= ${.TARGET:M*macro*:S/$(.TARGET)/-Pmm/}