[PATCH] genirq: cleanup: turn ARCH_HAS_IRQ_PER_CPU into CONFIG_IRQ_PER_CPU

Cleanup: change ARCH_HAS_IRQ_PER_CPU into a Kconfig method.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 5faacbb..b487e22 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -492,6 +492,10 @@
 	depends on GENERIC_HARDIRQS && SMP
 	default y
 
+config IRQ_PER_CPU
+	bool
+	default y
+
 source "arch/ia64/hp/sim/Kconfig"
 
 menu "Instrumentation Support"