powerpc/xics: xics.h relies on linux/interrupt.h

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/include/asm/xics.h b/arch/powerpc/include/asm/xics.h
index 146aad8..c4ed4c5 100644
--- a/arch/powerpc/include/asm/xics.h
+++ b/arch/powerpc/include/asm/xics.h
@@ -6,6 +6,8 @@
 #ifndef _XICS_H
 #define _XICS_H
 
+#include <linux/interrupt.h>
+
 #define XICS_IPI		2
 #define XICS_IRQ_SPURIOUS	0