ARM: integrator/versatile: consolidate FPGA IRQ handling code

Consolidate the FPGA IRQ handling code.  Integrator/AP and Versatile
have one FPGA-based IRQ handler each.  Integrator/CP has three.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/plat-versatile/Kconfig b/arch/arm/plat-versatile/Kconfig
index c5e2cd0..0b27500 100644
--- a/arch/arm/plat-versatile/Kconfig
+++ b/arch/arm/plat-versatile/Kconfig
@@ -3,6 +3,9 @@
 config PLAT_VERSATILE_CLCD
 	bool
 
+config PLAT_VERSATILE_FPGA_IRQ
+	bool
+
 config PLAT_VERSATILE_LEDS
 	def_bool y if LEDS_CLASS
 	depends on ARCH_REALVIEW || ARCH_VERSATILE