[TASK] Rework DLLK - Rename external functions

- Rename external functions of dllk and update all references

Change-Id: Ib2f641f27852cc15ffa85215439770cc88dbbbe9
Reviewed-on: http://brateggevoat1/gerrit/1234
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] Rework DLLK - Refactor code

- Split dllk.c into dllk.c, dllkfilter.c dllkstatemachine.c, dllframe.c
  and dllevent.c
- Adapt project files for new sources
- Refactor dll state machine
- Split function changeState()
- Rename variables, macros, types and functions
- Add doxygen headers

Change-Id: I0f1aee39da3302ee18a38e85c9822b239bef69b1
Reviewed-on: http://brateggevoat1/gerrit/1235
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] Rework DLLK - Cleanup header files

- Rename header files
- Update file references
- Cleanup dllktgt.h

Change-Id: I7fa82e48799c36b47ecc99f24c55247cd8cd0ae4
Reviewed-on: http://brateggevoat1/gerrit/1236
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] Add DLLK module documentation

Change-Id: I7f7e711a936c6986a7a1b7ddb5ec4d02ba5823bb
Reviewed-on: http://brateggevoat1/gerrit/1237
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>