[TASK] Refactor sdo-udpu.c

- Refactor code in sdo-udpu.c
- Add module documentation
- Adapt doxyfile to correctly include the sdo-udp functions

Change-Id: Iaebb3f9db29212858937198d14e5924240e384d3
Reviewed-on: http://brateggevoat1/gerrit/1495
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
Reviewed-by: Joerg Zelenka <joerg.zelenka@br-automation.com>
Reviewed-by: Thomas Mair <thomas.mair@br-automation.com>
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>
[TASK] Configure Linux to use virtual Ethernet

Configure Linux libraries and userspace daemon to correctly include
virtual Ethernet driver.

Change-Id: Ib02d54663a89f79ddb934774f809e616bc636bb0
Reviewed-on: http://brateggevoat1/gerrit/1496
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
Reviewed-by: Joerg Zelenka <joerg.zelenka@br-automation.com>
Reviewed-by: Thomas Mair <thomas.mair@br-automation.com>
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>
[TASK] Rename and cleanup EplSdoAsndu.h

- Rename to sdoasnd.h
- Adapt all references
- Cleanup file

Change-Id: I28b50cc96494ecfc49d4a11af237634b67322dba
Reviewed-on: http://brateggevoat1/gerrit/1514
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
Reviewed-by: Joerg Zelenka <joerg.zelenka@br-automation.com>
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>
[TASK] Refactor sdo-asndu.c

- Cleanup code
- Add doxygen documentation
- Rename functions and adapt references
- Add module documentation

Change-Id: I343fbb2f86d62cbfb1c2298654ab7673153557cc
Reviewed-on: http://brateggevoat1/gerrit/1515
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
Reviewed-by: Joerg Zelenka <joerg.zelenka@br-automation.com>
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>