ARM: stop *MIGHT_HAVE_PCI* config from being selected redundantly

*MIGHT_HAVE_PCI* config is already selected in ARCH_MULTIPLATFORM.
Don't select it redundantly in all ARCH_MULTIPLATFORM based machines.

Signed-off-by: Kishon Vijay Abraham I <[e-mail]>
Acked-by: Alexandre Belloni <[e-mail]>
Acked-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Arnd Bergmann <[e-mail]>

arch/arm/mach-at91/Kconfig

···
 	select ATMEL_ST
 	select CPU_ARM920T
 	select HAVE_AT91_USB_CLK
-	select MIGHT_HAVE_PCI
 	select PINCTRL_AT91
 	select SOC_SAM_V4_V5
 	select SRAM if PM

arch/arm/mach-axxia/Kconfig

···
 	select ARM_TIMER_SP804
 	select HAVE_ARM_ARCH_TIMER
 	select MFD_SYSCON
-	select MIGHT_HAVE_PCI
 	select PCI_DOMAINS if PCI
 	select ZONE_DMA
 	help

arch/arm/mach-exynos/Kconfig

···
 	select ARCH_DMA_ADDR_T_64BIT if ARM_LPAE
 	select HAVE_ARM_ARCH_TIMER
 	select AUTO_ZRELADDR
-	select MIGHT_HAVE_PCI
 	select PCI_DOMAINS if PCI
 	select PINCTRL_EXYNOS5440
 	select PM_OPP

arch/arm/mach-integrator/Kconfig

···
 config ARCH_INTEGRATOR_AP
 	bool "Support Integrator/AP and Integrator/PP2 platforms"
 	select INTEGRATOR_AP_TIMER
-	select MIGHT_HAVE_PCI
 	select SERIAL_AMBA_PL010 if TTY
 	select SERIAL_AMBA_PL010_CONSOLE if TTY
 	select SOC_BUS

arch/arm/mach-keystone/Kconfig

···
 	select COMMON_CLK_KEYSTONE
 	select ARCH_SUPPORTS_BIG_ENDIAN
 	select ZONE_DMA if ARM_LPAE
-	select MIGHT_HAVE_PCI
 	select PCI_DOMAINS if PCI
 	select PINCTRL
 	help

arch/arm/mach-spear/Kconfig

···
 	select HAVE_ARM_TWD if SMP
 	select PINCTRL
 	select MFD_SYSCON
-	select MIGHT_HAVE_PCI
 	help
 	  Supports for ARM's SPEAR13XX family
 

arch/arm/mach-versatile/Kconfig

···
 	select CPU_ARM926T
 	select ICST
 	select MFD_SYSCON
-	select MIGHT_HAVE_PCI
 	select PLAT_VERSATILE
 	select POWER_RESET
 	select POWER_RESET_VERSATILE