ARM: pxa: encode IRQ number into .nr_irqs

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Acked-by: Antonio Ospite <ospite@studenti.unina.it>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
diff --git a/arch/arm/mach-pxa/include/mach/balloon3.h b/arch/arm/mach-pxa/include/mach/balloon3.h
index eec92e6..561562b 100644
--- a/arch/arm/mach-pxa/include/mach/balloon3.h
+++ b/arch/arm/mach-pxa/include/mach/balloon3.h
@@ -174,6 +174,8 @@
 #define BALLOON3_CODEC_IRQ	IRQ_GPIO(BALLOON3_GPIO_CODEC_IRQ)
 #define BALLOON3_S0_CD_IRQ	IRQ_GPIO(BALLOON3_GPIO_S0_CD)
 
+#define BALLOON3_NR_IRQS	(IRQ_BOARD_START + 4)
+
 extern int balloon3_has(enum balloon3_features feature);
 
 #endif