ARM: Dove: allow PCI to be disabled

Allow PCI support for Dove to be disabled.  Some platforms do not have
anything connected to the PCIe ports, so requiring PCI support to be
built into the kernel just wastes space, and presents a lot more config
options than are necessary.

However, select USB_ARCH_HAS_EHCI so that we can still have EHCI
support.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

arch/arm/Kconfig

@@ -573,11 +573,12 @@ config ARCH_MVEBU
 config ARCH_DOVE
 	bool "Marvell Dove"
 	select CPU_V7
-	select PCI
 	select ARCH_REQUIRE_GPIOLIB
 	select GENERIC_CLOCKEVENTS
+	select MIGHT_HAVE_PCI
 	select NEED_MACH_IO_H
 	select PLAT_ORION
+	select USB_ARCH_HAS_EHCI
 	help
 	  Support for the Marvell Dove SoC 88AP510
 

arch/arm/mach-dove/Makefile

@@ -1,4 +1,4 @@
-obj-y				+= common.o addr-map.o irq.o pcie.o mpp.o
-
+obj-y				+= common.o addr-map.o irq.o mpp.o
+obj-$(CONFIG_PCI)		+= pcie.o
 obj-$(CONFIG_MACH_DOVE_DB)	+= dove-db-setup.o
 obj-$(CONFIG_MACH_CM_A510)	+= cm-a510.o

arch/arm/mach-dove/common.h

@@ -26,7 +26,11 @@ void dove_init_irq(void);
 void dove_setup_cpu_mbus(void);
 void dove_ge00_init(struct mv643xx_eth_platform_data *eth_data);
 void dove_sata_init(struct mv_sata_platform_data *sata_data);
+#ifdef CONFIG_PCI
 void dove_pcie_init(int init_port0, int init_port1);
+#else
+static inline void dove_pcie_init(int init_port0, int init_port1) { }
+#endif
 void dove_ehci0_init(void);
 void dove_ehci1_init(void);
 void dove_uart0_init(void);