m68knommu: Use generic irq Kconfig

No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Greg Ungerer <gerg@uclinux.org>

arch/m68knommu/Kconfig

@@ -2,6 +2,7 @@ config M68K
 	bool
 	default y
 	select HAVE_IDE
+	select HAVE_GENERIC_HARDIRQS
 
 config MMU
 	bool
@@ -48,10 +49,6 @@ config GENERIC_HWEIGHT
 	bool
 	default y
 
-config GENERIC_HARDIRQS
-	bool
-	default y
-
 config GENERIC_CALIBRATE_DELAY
 	bool
 	default y