Fixed doxygen rule violoation.

Fixed doxygen rule violoation.

include/mtp.h:17: Note:
  The recommended inclusion guard symbol is __TIZEN_<MODULE>_<SUB_MODULE>_<FILE_BASE_NAME>_H__.
  The number of <SUB_MODULE> segments can be 0, 1, or more.
  For example, for data_control_map.h the symbol is __TIZEN_APPFW_DATA_CONTROL_MAP_H__.
  For this file, it would be __TIZEN_<MODULE>_<SUB_MODULE>_MTP_H__.

include/mtp.h:205: ERROR:
  Return value #MTP_ERROR_INVALID_PARAMETER used in incorrect order.
  Correct return value order:
  ERROR_NONE
  ERROR_NOT_SUPPORTED
  ERROR_PERMISSION_DENIED
  ERROR_INVALID_PARAMETER
  Other errors

Change-Id: Ieae8e0f9d4ddf389e3b85941abe934a05b4e6668
Signed-off-by: saerome.kim <saerome.kim@samsung.com>