ARM: exynos: add missing include of linux/module.h

After the restructuring of the module.h and init.h headers,
we now need to include this explicitly here.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: Tomasz Figa <tomasz.figa@gmail.com>
Cc: Ben Dooks <ben-linux@fluff.org>
diff --git a/arch/arm/mach-exynos/cpuidle.c b/arch/arm/mach-exynos/cpuidle.c
index f57cb91..93d2dec 100644
--- a/arch/arm/mach-exynos/cpuidle.c
+++ b/arch/arm/mach-exynos/cpuidle.c
@@ -14,6 +14,7 @@
 #include <linux/cpu_pm.h>
 #include <linux/io.h>
 #include <linux/export.h>
+#include <linux/module.h>
 #include <linux/time.h>
 #include <linux/platform_device.h>