As we merged the dev_io main program back into a single
code, we need a way to pass additional arguments to it.
So, we declare an dev_io_type parameter, meaning what SMIOs are
spawned, and a smio_inst_id parameter, used for DEVIOs with a
single SMIO, but multiple instances of it.

Only the most necessary functions are here. Missing
some functionality.

This makes it easier to maintain, reduces the amount of
code duplication and allow to make more generic code to
instantiate different types of DEVIOs

Now, we can easily interface with exported functions with any type
of parameter

RFFE is not actually a chip in a physical way, but a
whole device with some communication protocol. So, in this way,
we can treat it just like a IC and use our same architecture.

Some messages have the possibility to return an empty data frame,
such as the read_block function when reading 0 bytes.

This fixes #64 github issue

Now, we can reuse these functions for similar string to enum
conversions

Added new LLIO operations for ethernet devices

Now, an exported function can have an argument that
has a variable size, up to the maximum specified in
the function description. Particularly useful for
returning data from "read" functions

Cleaned the constructor and destructor methods, as well as usage
of the new smpr_set_handler () and smpr_unset_handler () functions

Missing a trivial free at the end of the bpm_client
destructor

Some functions inside the respective open () calls can fail,
specifically _init () ones. So, we must destroy everything
allocated before that and exit.

Now we chack for the presence of the Makefile.
If not present, we generate it through autotools.

As we have changed all of our third-party repos
to the foreign folder, we must update them in the
top Makefile

Now, our PCIe driver resides on a different path

Now, the PCIe driver is located in foreign/pcie-driver

This folder now holds our subprojects and third-party code

We can choose whether or not  we want the compilation of DEV_MNGR.