arm: Use generic show_interrupts()

Use the generic version and just keep the arch specific output.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index efe06e0..7c0effb 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -28,6 +28,7 @@
 	select HAVE_C_RECORDMCOUNT
 	select HAVE_GENERIC_HARDIRQS
 	select HAVE_SPARSE_IRQ
+	select GENERIC_IRQ_SHOW
 	help
 	  The ARM series is a line of low-power-consumption RISC chip designs
 	  licensed by ARM Ltd and targeted at embedded applications and