LU-2658 llite: too many arguments in generic_file_llseek_size

LU-2658 llite: too many arguments in generic_file_llseek_size

A generic_file_llseek_size starting kernel 3.5 has 5 arguments.
We need to detect and use with the correct number of arguments.

Signed-off-by: Minh Diep <minh.diep@intel.com>
Change-Id: I966de37a880a94cde54be84062dec2b91e8334f5
Reviewed-on: http://review.whamcloud.com/5244
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Yang Sheng <yang.sheng@intel.com>
Reviewed-by: Peng Tao <bergwolf@gmail.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>