LU-6142 uapi: remove remaining typedef in lustre UAPI headers

LU-6142 uapi: remove remaining typedef in lustre UAPI headers

Remove remaining tyepdef in lustre UAPI headers to make them
linux kernel compliant.

Test-Parameters: trivial

Change-Id: I13a24deed348e06c1c63bd0c332f63d4f77a0d76
Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-on: https://review.whamcloud.com/31175
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Ben Evans <bevans@cray.com>
Reviewed-by: Fan Yong <fan.yong@intel.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: Sebastien Buisson <sbuisson@ddn.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>