[Tizen/API] Update header file to comply with Tizen API rule

[Tizen/API] Update header file to comply with Tizen API rule

In order to comply with the checklist of Tizen API, this patch modifies
a user header file, which is actually included in the code. Detailed
items of modification are as below.

* Add a period "." at the end of @brief.
* Values NNS_ERROR_PIPELINE_FAIL and TIZEN_ERROR_STREAMS_PIPE have
  different suffixes.
* No description in enum variables.
* Enum names should end with '_e'.
* Please use @param[in], @param[out] or @param[in,out]

Signed-off-by: Sangjung Woo <sangjung.woo@samsung.com>