Move i386/isa/elink.[hc] to dev/ep.

The ep(4) driver is the only consumer of the two functions from
elink.c. I removed the standalone module as well, and most likely,
the module metadata is not nee

Move i386/isa/elink.[hc] to dev/ep.

The ep(4) driver is the only consumer of the two functions from
elink.c. I removed the standalone module as well, and most likely,
the module metadata is not needed anywhere, but this is for later
cleanup.

Discussed with: imp, jhb
Sponsored by: The FreeBSD Foundation

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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

Remove EISA support for ep driver. Left in place EISA strings that are
still relevant (ISA cards can still be in EISA mode, and we're still
ignoring those in the identify routine). Notes about cards

Remove EISA support for ep driver. Left in place EISA strings that are
still relevant (ISA cards can still be in EISA mode, and we're still
ignoring those in the identify routine). Notes about cards in EISA
mode have been left in the manual since they aren't relevant to EISA
support, but instruct how to properly configure an ISA card in a mode
when it is in a ISA bus slot.

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Cleanup the way we include some files (in this case EISA) based on
kernel config. Also tidy up the ed options.

Remove dependence on source tree options. Move all kernel module
options into kern.opts.mk and change all the places where we use
src.opts.mk to pull in the options. Conditionally define SYSDIR and
u

Remove dependence on source tree options. Move all kernel module
options into kern.opts.mk and change all the places where we use
src.opts.mk to pull in the options. Conditionally define SYSDIR and
use SYSDIR/conf/kern.opts.mk instead of a CURDIR path. Replace all
instances of CURDIR/../../etc with STSDIR, but only in the affected
files.

As a special compatibility hack, include bsd.owm.mk at the top of
kern.opts.mk to allow the bare build of sys/modules to work on older
systems. If the defaults ever change between 9.x, 10.x and current for
these options, however, you'll wind up with the host OS' defaults
rather than the -current defaults. This hack will be removed when
we no longer need to support this build scenario.

Reviewed by: jhb
Differential Revision: https://phabric.freebsd.org/D529

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Use src.opts.mk in preference to bsd.own.mk except where we need stuff
from the latter.

Don't build EISA by default anymore. Remove from i386 GENERIC and
create an option that defaults to "no" on all platforms to not build
the EISA bits.

Discussed on: arch@

Minor reorg to keep each bus' files on one line

eisa attachment is safe to be in this module, both on eisa and
non-eisa configured kernels.

Add usbdevs.h and pccarddevs.h to the build list, as appropriate. This is needed to build as part of world or in src/sys/modules.

Move to generating pccarddevs.h on the fly, both for the kernel and
the modules.

Also generate usbdevs.h automatically now, but a non-kernel file is
stopping that at the moment.

There's already the elink.ko module available, don't embed it here.

Reviewed by: markm

Move adding -DPC98 to CFLAGS from each modules to sys/modules/Makefile.inc.

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

Added '-DPC98' to CFLAGS if MACHINE == pc98.

Add a module makefile for if_ep.

This is not enabled by default, as the module is missing a bunch of
useful stuff (like the ability to unload).

Not objected to by: mdodd