i386/62595: npx.c do not compiles without ISA bus configured

[Bruce Evans]

On Sun, 8 Feb 2004, Radim Kolar wrote:

> >Description:
> If you don't have 'device isa' entry in kernel configuration, kernel
> build will fail in npx driver. I want to build a smallest possible kernel,
> so i have commeted isa bus out.

Try this patch.  i386 require isa so leaving it out will give a kernel
hat won't actually work, however.  The NPX_ISA ifdefs in npx.c basically
leave out isa-pnp, not isa, and some i386 kernels configured without isa
can only be linked because not configuring it doesn't actually leave out
all the isa bits.

%%%
Index: npx.c
===================================================================
RCS file: /home/ncvs/src/sys/i386/isa/npx.c,v
retrieving revision 1.144
diff -u -2 -r1.144 npx.c
--- npx.c	3 Nov 2003 21:53:38 -0000	1.144
+++ npx.c	10 Feb 2004 01:30:35 -0000
@@ -1038,5 +1038,4 @@
 static devclass_t npx_devclass;

-#ifdef DEV_ISA
 /*
  * We prefer to attach to the root nexus so that the usual case (exception 16)
@@ -1045,4 +1044,5 @@
 DRIVER_MODULE(npx, nexus, npx_driver, npx_devclass, 0, 0);

+#ifdef DEV_ISA
 /*
  * This sucks up the legacy ISA support assignments from PNPBIOS/ACPI.
%%%

Bruce