[IBAL, MTHCA, MT23108] Fix FMR implementation to properly represent

[IBAL, MTHCA, MT23108] Fix FMR implementation to properly represent
that it is not IB standard, but rather a Mellanox specific optimization.
Make parameters to the mapping function consistent with physical memory
registration.  Add FMR stubs to MT23108 driver.

git-svn-id: svn://openib.tc.cornell.edu/gen1@379 ad392aa1-c5ef-ae45-8dd8-e69d62a5ef86