[ARM] mmp: move declarations into SoC specific header file from common.h

Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
diff --git a/arch/arm/mach-mmp/irq-mmp2.c b/arch/arm/mach-mmp/irq-mmp2.c
index cb18221..01342be 100644
--- a/arch/arm/mach-mmp/irq-mmp2.c
+++ b/arch/arm/mach-mmp/irq-mmp2.c
@@ -16,6 +16,7 @@
 #include <linux/io.h>
 
 #include <mach/regs-icu.h>
+#include <mach/mmp2.h>
 
 #include "common.h"