mpt2sas : Description patch.

MPT2SAS driver updates.
Please consider it for next Merge window.
Before applying this patchset previous patch submission for mpt2sas 05.100.00.00 need to be applied.

[PATCH 01/05] mpt2sas: sanity added to remove duplicate port from topology [PATCH 02/05] mpt2sas: Send default descriptor for RAID pass through in mpt2ctl [PATCH 03/05] mpt2sas: Added support for PCIe Advanced Error Recovery. [PATCH 04/05] mpt2sas: Check for NULL pointer before free_pages is added. [PATCH 05/05] mpt2sas: Upgrade version 05.100.00.01

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