MIPS: BCM47xx: Enable SSB prerequisite SSB_DRIVER_PCICORE.

Split of from Arend's patch.
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Patchwork: https://patchwork.linux-mips.org/patch/4759/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/bcm47xx/Kconfig

@@ -8,6 +8,7 @@ config BCM47XX_SSB
 	select SSB_DRIVER_EXTIF
 	select SSB_EMBEDDED
 	select SSB_B43_PCI_BRIDGE if PCI
+	select SSB_DRIVER_PCICORE if PCI
 	select SSB_PCICORE_HOSTMODE if PCI
 	select SSB_DRIVER_GPIO
 	select GPIOLIB