resolve stricter warnings

In order to convert this repository to Meson, we need to make it
compile under `warning_level=3`. Fix a number of warning classes
across the repository or disable them.

S

resolve stricter warnings

In order to convert this repository to Meson, we need to make it
compile under `warning_level=3`. Fix a number of warning classes
across the repository or disable them.

Some fixes are:

* Add missing header files.
* Fully initialize structs as necessary.
* Add `__attribute__((unused))` on parameters as necessary.
* Fix comparisons between signed and unsigned.
* Fix printf specifiers as necessary.
* Avoid case-fallthrough.
* Remove if conditions which are always true.

Some warnings would require extensive code changes, due to their
pervasive use, and so are disabled at a per-file level:
* `-Wpointer-arith`
* `-Wunused-result`

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: If8992b9108f12b39f796ed090ba29868c9f3c627

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mboxd: Refactor and rename mbox.h to mboxd.h

Refine the purpose of the header file to represent what's required for
the daemon itself, not its constituent pieces. Rather, split those

mboxd: Refactor and rename mbox.h to mboxd.h

Refine the purpose of the header file to represent what's required for
the daemon itself, not its constituent pieces. Rather, split those
definitions out to their respective header files and include them as
necessary.

Finally the header file is renamed to better reflect its purpose.

Change-Id: I48c409f57d96c844589cd865b24f197477dfe87c
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>

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mboxd: Rename mboxd_msg to transport_mbox

Change-Id: I0f4e206648c02a98fa938a7e582470c8d90904f1
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>

Unfork phosphor-mboxd from mboxbridge

Change-Id: I1b3b9d7fd47719594c1de027389959a5a9a3ea7a
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>

misc: Replace license blurb with kernel-style SPDX markers

This was roughly achieved by the following shell script:

$ git ls-files |
grep '\.[ch]p*$' |
while

misc: Replace license blurb with kernel-style SPDX markers

This was roughly achieved by the following shell script:

$ git ls-files |
grep '\.[ch]p*$' |
while read F; do EXT=${F##*.}; cat spdx.$EXT <(sed '/^\/\*$/,/^ \*\/$/d' $F) > ${F}.tmp; mv ${F}.tmp $F; done

With the following context:

$ cat spdx.c
// SPDX-License-Identifier: Apache-2.0
// Copyright (C) 2018 IBM Corp.
$ cat spdx.h
/* SPDX-License-Identifier: Apache-2.0 */
/* Copyright (C) 2018 IBM Corp. */
$ ls -l spdx.*
-rw-r--r-- 1 andrew andrew 71 Feb 27 12:02 spdx.c
lrwxrwxrwx 1 andrew andrew 6 Feb 27 12:02 spdx.cpp -> spdx.c
-rw-r--r-- 1 andrew andrew 77 Feb 27 12:02 spdx.h
lrwxrwxrwx 1 andrew andrew 6 Feb 27 12:02 spdx.hpp -> spdx.h

The `sed` invocation catches a lot of function documentation, so the
hunks were manually added to avoid removing information that we want to
keep.

Change-Id: I63e49ca2593aa0db0568c7a63bfdead388642e76
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>

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test: Add create_write_window_v2

Change-Id: I26992306b7de4ece0b14b51a4a9c443ef47ce302
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>

test: Add create_read_window_v2

Change-Id: I2b1295faea3df207cce5430653b4e0a78176e13c
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>