Added poll_add/poll_del functions into poll_ops.

Signed-off-by: Jithin Jose <jithin.jose@intel.com>
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Updated poll_add/poll_del functions in PSM provider

Signed-off-by: Jithin Jose <jithin.jose@intel.com>
Add fi_poll_open and fi_wait_open

Signed-off-by: Jithin Jose <jithin.jose@intel.com>
Merge pull request #397 from shefty/master

Manual merge of PR #392