[FIX] Change size of JTAG UART FIFO size

Set CN's JTAG FIFO size to 64 byte. A larger value leads to errors with
nios2-terminal.

Change-Id: Id1abdfe5c1d96afa108306d0f58702df71a1a535
Reviewed-on: http://brateggevoat1/gerrit/1298
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>
[TASK] Rename EplObdCdc.h

- Rename EplObdCdc.h to obdcdc.h
- Update all references
- Add include file in CMakeLists.txt files

Change-Id: Iee99271ce71871ca939662c909566a885672e316
Reviewed-on: http://brateggevoat1/gerrit/1303
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>
[TASK] Refactor OBD CDC module

- Rename functions
- Move CDC info from API instance into obdcdc instance variable
- Refactor code
- Change external interface and adapt code which uses it

Change-Id: If1e6b66506714a65009eb237f96d6129198ea699
Reviewed-on: http://brateggevoat1/gerrit/1304
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
Reviewed-by: Wolfgang Seiss <wolfgang.seiss@br-automation.com>
Reviewed-by: Joerg Zelenka <joerg.zelenka@br-automation.com>
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>
[TASK] Assign CPU ID to Nios II processors

This unique and unequal zero ID is used for spinlock feature.

Change-Id: Ibcb158406834f63bfb0acdd6d61167e3e7654268
Reviewed-on: http://brateggevoat1/gerrit/1282
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>
[FIX] Revise script for Nios II demos to preserve path in object files

The source-file-paths are provided to build process with absolute path. This
enables to preserve the path from the source files also in the object file
list. Source files with same name but different paths do not result in one and
the same object file!
(e.g. examples/demo_mn_console/event.c and stack/src/common/event/event.c)

Change-Id: I2a038052f0bfef1aa7f1c385f473f33b72b4e7e2
Reviewed-on: http://brateggevoat1/gerrit/1301
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>