s390/pci: add PCI Kconfig options

CONFIG_PCI is disabled by default currently.

Signed-off-by: Jan Glauber <[e-mail]>
Signed-off-by: Martin Schwidefsky <[e-mail]>

arch/s390/Kconfig

···
 config GENERIC_BUG_RELATIVE_POINTERS
 	def_bool y
 
-config NO_IOMEM
-	def_bool y
-
-config NO_DMA
-	def_bool y
-
 config ARCH_DMA_ADDR_T_64BIT
 	def_bool 64BIT
 
···
 
 config AUDIT_ARCH
 	def_bool y
+
+config NO_IOPORT
+	def_bool y
+
+config PCI_QUIRKS
+	def_bool n
 
 config S390
 	def_bool y
···
 	  module will be called qdio.
 
 	  If unsure, say Y.
+
+menuconfig PCI
+	bool "PCI support"
+	default n
+	depends on 64BIT
+	select ARCH_SUPPORTS_MSI
+	select PCI_MSI
+	help
+	  Enable PCI support.
+
+if PCI
+
+config PCI_NR_FUNCTIONS
+	int "Maximum number of PCI functions (1-4096)"
+	range 1 4096
+	default "64"
+	help
+	  This allows you to specify the maximum number of PCI functions which
+	  this kernel will support.
+
+source "drivers/pci/Kconfig"
+source "drivers/pci/pcie/Kconfig"
+source "drivers/pci/hotplug/Kconfig"
+
+endif	# PCI
+
+config PCI_DOMAINS
+	def_bool PCI
+
+config HAS_IOMEM
+	def_bool PCI
+
+config IOMMU_HELPER
+	def_bool PCI
+
+config HAS_DMA
+	def_bool PCI
+	select HAVE_DMA_API_DEBUG
+
+config NEED_SG_DMA_LENGTH
+	def_bool PCI
+
+config HAVE_DMA_ATTRS
+	def_bool PCI
 
 config CHSC_SCH
 	def_tristate m