Changes

** 3: ErrorNotifierEvent

** 3: ErrorNotifierEvent

* /dev/nvhost-ctrl: Used to get events for SyncPts.

* /dev/nvhost-ctrl: Used to get events for SyncPts.

** If bit31-28 is 1, then lower 16-bits contain event_slot, bit27-16 contain syncpt_number.  

** If bit31-28 is 1, then lower 16-bits contain event_id, bit27-16 contain syncpt_id.  

** If bit31-28 is 0, then lower 4-bits contain event_slot, bit31-4 contains syncpt_number.

** If bit31-28 is 0, then lower 4-bits contain event_id, bit31-4 contains syncpt_id.

* /dev/nvhost-ctrl-gpu

* /dev/nvhost-ctrl-gpu

** 1: Returns error_event_handle.

** 1: Returns error_event_handle.