Fix comments in mpt_sas3.conf.
Update with local repo.:
mpt_sas3 sometimes only allocates 1 MSI-X interrupts with SAS2308
"NULL command for address reply in slot XXXX" messages.
Auto request sense buffer allocation is broken in mptsas_start_passthrough().
Panic message:assertion failed: mpt != NULL
mpt_sas3 internal pkt retry causes crash.