ssb: Disable PCI host for PCI_DRIVERS_GENERIC

Since commit d41e685 ("MIPS: Kconfig: Set default MIPS system type
as generic") changed the default MIPS platform to the "generic"
platform, which uses PCI_DRIVERS_GENERIC instead of PCI_DRIVERS_LEGACY,
various files in drivers/ssb/ have failed to build.

This is particularly due to the existence of struct pci_controller being
dependent on PCI_DRIVERS_LEGACY since commit c5611df ("MIPS: PCI:
Introduce CONFIG_PCI_DRIVERS_LEGACY"), so add that dependency to Kconfig
to prevent these files being built for the "generic" platform including
all{yes,mod}config builds.

Fixes: c5611df ("MIPS: PCI: Introduce CONFIG_PCI_DRIVERS_LEGACY")
Signed-off-by: James Hogan <[email protected]>
Cc: Michael Buesch <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: Paul Burton <[email protected]>
Cc: Matt Redfearn <[email protected]>
Cc: Guenter Roeck <[email protected]>
Cc: [email protected]
Cc: [email protected]
Tested-by: Guenter Roeck <[email protected]>
Signed-off-by: Kalle Valo <[email protected]>

Author: amalon

drivers/ssb/Kconfig

@@ -32,7 +32,7 @@ config SSB_BLOCKIO
 
 config SSB_PCIHOST_POSSIBLE
 	bool
-	depends on SSB && (PCI = y || PCI = SSB)
+	depends on SSB && (PCI = y || PCI = SSB) && PCI_DRIVERS_LEGACY
 	default y
 
 config SSB_PCIHOST