LU-8056 mem: handle GFP_IOFS removal in newer kernels

LU-8056 mem: handle GFP_IOFS removal in newer kernels

Starting with linux kernel 4.5 GFP_IOFS has been removed.
GFP_IOFS was meant to be a short hande to clear two
GFP flags but it was never used properly. Replace it with
GFP_NOFS instead.

Change-Id: I97e045b1363ce216426ae709145b839a838e5762
Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-on: http://review.whamcloud.com/21781
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>