rtc: at91sam9: include linux/of.h
This driver is using device tree but is not including of.h
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c
index f9e85ac..16492e2 100644
--- a/drivers/rtc/rtc-at91sam9.c
+++ b/drivers/rtc/rtc-at91sam9.c
@@ -18,6 +18,7 @@
#include <linux/kernel.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
+#include <linux/of.h>
#include <linux/platform_data/atmel.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
