r232411 breaks onboard 1068 detection

[Andrew Pantyukhin]

Hello,

r232411 broke onboard 1068 detection on all boxes with SuperMicro
X8ST3 motherboards for us.

All of them are also equipped with two extra 1068 controllers, which
are detected fine. Reverting to r231518 with otherwise latest stable
kernel works around the problem.

The issue is still there at r233425.

Here's the disappearing device:

mpt2 at pci0:5:0:0:        class=0x010000 card=0x10001000 chip=0x00591000
rev=0x08 hdr=0x00
    vendor     = 'LSI Logic / Symbios Logic'
    device     = 'MegaRAID SAS 8208ELP/8208ELP'
    class      = mass storage
    subclass   = SCSI


Best,
Andrew