Clean up the way we allocate and map memory for use as ICM ("InfiniHost
Context Memory") when running in Arbel MemFree mode.  This slightly improves
the code for mapping the firmware area and will make future progress towards
full MemFree support much easier.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>