powerpc: Use generic show_interrupts()

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 3584e4d..d0e8a1d 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -139,6 +139,8 @@
 	select HAVE_SPARSE_IRQ
 	select IRQ_PER_CPU
 	select GENERIC_HARDIRQS_NO_DEPRECATED
+	select GENERIC_IRQ_SHOW
+	select GENERIC_IRQ_SHOW_LEVEL
 
 config EARLY_PRINTK
 	bool