MFC: r309284-r309294 (kadesai)

r309294
This patch upgrades driver version to 06.712.04.00-fbsd

r309293
This patch will add code to refire IOCTL commands after OCR.

r309292
This patch will unblock SYNCHRONIZE_CACHE command to firmware, i.e. don't
block the SYNCHRONIZE_CACHE command at driver instead of passing it to
firmware for all Gen3 controllers.

r309291
Wait for AEN task to be completed(if in queue) before resetting the
controller and return without processing event in AEN thread, if controller
reset is in progress.

r309290
This patch will add task management support in driver. Below is high level
description:
If a SCSI IO times out, then before initiating OCR, now the driver will try
to send a target reset to the particular target for which the IO is timed
out. If that also fails, then the driver will initiate OCR.

r309289
Process outstanding reply descriptors from all the reply descriptor post
queues before initiating OCR.

r309288
Clean up reference to AEN command if abort AEN is succesful as the command
is aborted. Did the same by setting sc->aen_cmd = NULL when aborting AEN is
successful.

r309287
Update controller properties(read OCR capability bit) when
MR_EVT_CTRL_PROP_CHANGED recieved.

r309286
Add sanity check in IO and IOCTL path not to process command further if
controller is in HW_CRITICAL_ERROR.

r309285
Use a variable to indicate Gen3 controllers and remove all PCI ids based
checks used for gen3 controllers.

r309284
High level description of new solution -
Free MFI and MPT command from same context.
Free both the command either from process (from where mfi-mpt pass-through
was called) or from ISR context. Do not split freeing of MFI and MPT,
because it creates the race condition which will do MFI/MPT list.