Retire non-NEW_PCIB code and remove config option

All architectures enable NEW_PCIB in DEFAULTS (arm being the most recent
to do so in 121be555997b (arm: Set NEW_PCIB in DEFAULTS rather than a
subse

Retire non-NEW_PCIB code and remove config option

All architectures enable NEW_PCIB in DEFAULTS (arm being the most recent
to do so in 121be555997b (arm: Set NEW_PCIB in DEFAULTS rather than a
subset of kernel configs")), so it's time we removed the legacy code
that no longer sees much testing and has a significant maintenance
burden.

Reviewed by: jhb, andrew, emaste
Differential Revision: https://reviews.freebsd.org/D32954

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Remove residual blank line at start of Makefile

This is a residual of the $FreeBSD$ removal.

MFC After: 3 days (though I'll just run the command on the branches)
Sponsored by: Netflix

sys: Remove $FreeBSD$: one-line sh pattern

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

We'll never have multiple slots a cardbus bridge. So, replace exca
array with a singleton.

Also, pccbb isa attachment is never going to happen, do disconnect it from the
build (will delete this in f

We'll never have multiple slots a cardbus bridge. So, replace exca
array with a singleton.

Also, pccbb isa attachment is never going to happen, do disconnect it from the
build (will delete this in future commit). It would need to be updated as well,
but since this code is effectively dead code, remove it from the build instead.

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sys/modules: normalize .CURDIR-relative paths to SRCTOP

This simplifies make output/logic

Tested with: `cd sys/modules; make ALL_MODULES=` on amd64
MFC after: 1 month
Sponsored by: Dell EMC Isilon

Merge sync of head

MFhead @ r277403

Reintegrate head: r274132-r277384

Sponsored by: The FreeBSD Foundation

On x86 force NEW_PCIB, since that's the default. While this option
would be picked up for kernel builds, it isn't picked up for
old-fashioned builds. Without this option, PCI bus numbers are busted
f

On x86 force NEW_PCIB, since that's the default. While this option
would be picked up for kernel builds, it isn't picked up for
old-fashioned builds. Without this option, PCI bus numbers are busted
for modules build iteratively.

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And isa_if.h

Add pccbb_isa.c and pccbb_pci.c

Fix this pending the decision of which of the redundant
sys/modules/{pc,}cbb/Makefile to remove.

Drop <bsd.man.mk> support from <bsd.kmod.mk>.

Not objected to by: -current

Turn on unconditional symbol export for modules whose API is
not clear enough, will require additional analysis, or will
require some input from their maintainers.

Use a consistent style and one much closer to the rest of /usr/src

Use .include <bsd.kmod.mk> to get to ../../*/conf/kmod.mk instead of
encoding the relative path.

Pull in sys/conf/kmod.mk, rather than /usr/share/mk/bsd.kmod.mk.
This means that the kernel can be totally self contained now and is not
dependent on the last buildworld to update /usr/share/mk. Thi

Pull in sys/conf/kmod.mk, rather than /usr/share/mk/bsd.kmod.mk.
This means that the kernel can be totally self contained now and is not
dependent on the last buildworld to update /usr/share/mk. This might
also make it easier to build 5.x kernels on 4.0 boxes etc, assuming
gensetdefs and config(8) are updated.

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Removed special rules for building and cleaning device interface files
and empty options files. The rules are now generated automatically in
bsd.kmod.mk. Cleaned up related things ($S and ${CLEANFI

Removed special rules for building and cleaning device interface files
and empty options files. The rules are now generated automatically in
bsd.kmod.mk. Cleaned up related things ($S and ${CLEANFILES}).

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Add modules for cardbus and the cardbus bridge driver. Files needed
to build these to be committed next.

Again, not added to sys/modules/Makefile

And isa_if.h

Add pccbb_isa.c and pccbb_pci.c

Fix this pending the decision of which of the redundant
sys/modules/{pc,}cbb/Makefile to remove.

Drop <bsd.man.mk> support from <bsd.kmod.mk>.

Not objected to by: -current

Turn on unconditional symbol export for modules whose API is
not clear enough, will require additional analysis, or will
require some input from their maintainers.

Use a consistent style and one much closer to the rest of /usr/src