This was include in commits from lnls-bpm/bpm-gw@09f35bd8f7 to
lnls-bpm/bpm-gw@3c537b769f

Now, almost all (with the exception of the dev_io.c which
will be fixed soon) specific code to a board is
located inside include/board/<board_name> and
src/board/<board_name>

As LLIO is build as a library, we use
the new header file location

This is needed as we use a custom mapping between
board/bpm and the bpm_id used to spawn EPICS IOC
processes.

This is a first setp into modularizing the source code into
independent components. We would like to move as much as
possible functionality into independent libraries (src/libs).

It's more flexible to use a structure for these addresses.
So, we can use different addresses for different
SMIO instances.

This is accordingly to the FPGA firmware code,
bpm-gw repository, commit 8520861f09.

We don't use BAR4 specifier for all MACROS. Just for the
ones that are the base address of the SMIOs.

Also, we have changed the way we specify the devices. Now,
we have only the offsets to a generic base address. In this way,
we can instantiate various SMIO with the same name service, apart
from an ID at the end, such as: BPM0:DEVIO:SWAP0, BPM0:DEVIO:SWAP1
and so on.