ARM: select PCI_DOMAINS config from ARCH_MULTIPLATFORM

PCI_DOMAINS config should be selected for any SoCs
having more than a single PCIe controller. Without PCI_DOMAINS
config, only one PCIe controller gets registered.

Select PCI_DOMAINS in ARCH_MULTIPLATFORM if PCI is selected, since
it doesn't harm even if a platform has a single PCIe port.
Also remove PCI_DOMAINS being selected from other platform
specific configs.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/Kconfig

@@ -336,6 +336,7 @@ config ARCH_MULTIPLATFORM
 	select GENERIC_CLOCKEVENTS
 	select MIGHT_HAVE_PCI
 	select MULTI_IRQ_HANDLER
+	select PCI_DOMAINS if PCI
 	select SPARSE_IRQ
 	select USE_OF