LU-6142 llite: move CONFIG_SECURITY handling to llite_internal.h

LU-6142 llite: move CONFIG_SECURITY handling to llite_internal.h

For the linux kernel its recommended to keep CONFIG_* wrapped code
in a header file instead of the source files to avoid making the
code more difficulty to read. Move CONFIG_SECURITY wrapped code
to llite_internal.h in this case.

Change-Id: I60eba17181d3b57fb64e99a441163f975dbab03c
Test-Parameters: trivial
Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-on: https://review.whamcloud.com/33410
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Alex Zhuravlev <bzzz@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: John L. Hammond <jhammond@whamcloud.com>