Merge pull request #257 in SW_PON/linux from feature/DRVLIB_SW-395-gswip3.1_driver_development to xrx500

* commit '3cef163916c4e60e6869e0814572b6432479ea82':
  DRVLIB_SW-395: Removed our own KERNEL_MODE define with linux built in __KERNEL__
  Header file and comments updated
  DRVLIB_SW-395: Using 1 macro for standalone and Linux kernel
  DRVLIB_SW-395: Removing unused #if 0 codes, Removed #if 1 Updated Common header files to not use and macros
  Updating the File header
  Syncing the GSWIP Bugfix and development code from GSWIP unified branch to kernel Master branch. 1) CheckPatch Cleanup 2) BugFix and development updates for GSWIP 3.0 and GSWIP 3.1 features and Switch CLI