Wire up finit_module syscall

Linux was granted a new system call to load modules by file descriptor
in commit 34e1169d

 ("module: add syscall to load module from fd").

Wire it up for ia64 (ready for the Chrome port :-)

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>