"libata: fix non-uniform ports handling" breaks sata_sis secondary port

[Patrick McHardy <kaber@trash.net>]

The patch "libata: fix non-uniform ports handling" breaks the
secondary SATA port with the sata_sis driver for me (no link
detected). The reason seems to be that the SIS_FLAG_CFGSCR flag
is only set on probe_ent->port_flags in sis_init_one(), but
ata_port_init() uses ent->pinfo2->flags for initialization of
the flags in struct ata_port for the secondary port.

lspci entry of the controller below, if more information is needed
please ask.


0000:00:05.0 RAID bus controller: Silicon Integrated Systems [SiS] RAID
bus controller 180 SATA/PATA  [SiS] (rev 01) (prog-if 85)
        Subsystem: ASUSTeK Computer Inc.: Unknown device 810e
        Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
        Status: Cap- 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 128
        Interrupt: pin A routed to IRQ 18
        Region 0: I/O ports at eff0 [size=8]
        Region 1: I/O ports at efe4 [size=4]
        Region 2: I/O ports at efa8 [size=8]
        Region 3: I/O ports at efe0 [size=4]
        Region 4: I/O ports at ef90 [size=16]
        Region 5: I/O ports at <unassigned>
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