i386/132206: mpt driver: system panics on boot when mirroring and 2nd drive is resyncing

[Geoffrey Lassner]

7.2 RC1 also panics with a similar error:

Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address   = 0x14
fault code              = supervisor read, page not present
instruction pointer     = 0x20:0xc046f77b
stack pointer           = 0x28:0xc75d8b80
frame pointer           = 0x28:0xc75d8b9c
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 18 (swi2: cambio)
trap number             = 12
panic: page fault