leds: Include linux/of.h header

'of_match_ptr' is defined in linux/of.h. Include it explicitly.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index e8b01e5..7ccafde 100644
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -15,6 +15,7 @@
 #include <linux/platform_device.h>
 #include <linux/gpio.h>
 #include <linux/leds.h>
+#include <linux/of.h>
 #include <linux/of_platform.h>
 #include <linux/of_gpio.h>
 #include <linux/slab.h>
diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c
index fe3bcbb..6b553d9 100644
--- a/drivers/leds/leds-lp5523.c
+++ b/drivers/leds/leds-lp5523.c
@@ -29,6 +29,7 @@
 #include <linux/leds.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
+#include <linux/of.h>
 #include <linux/platform_data/leds-lp55xx.h>
 #include <linux/slab.h>
 
diff --git a/drivers/leds/leds-lp5562.c b/drivers/leds/leds-lp5562.c
index 2585cfd..bf006f4 100644
--- a/drivers/leds/leds-lp5562.c
+++ b/drivers/leds/leds-lp5562.c
@@ -17,6 +17,7 @@
 #include <linux/leds.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
+#include <linux/of.h>
 #include <linux/platform_data/leds-lp55xx.h>
 #include <linux/slab.h>
 
diff --git a/drivers/leds/leds-lp8501.c b/drivers/leds/leds-lp8501.c
index 8d55a780..f1c704f 100644
--- a/drivers/leds/leds-lp8501.c
+++ b/drivers/leds/leds-lp8501.c
@@ -18,6 +18,7 @@
 #include <linux/leds.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
+#include <linux/of.h>
 #include <linux/platform_data/leds-lp55xx.h>
 #include <linux/slab.h>
 
diff --git a/drivers/leds/leds-ns2.c b/drivers/leds/leds-ns2.c
index 141f134..c7a4230 100644
--- a/drivers/leds/leds-ns2.c
+++ b/drivers/leds/leds-ns2.c
@@ -30,6 +30,7 @@
 #include <linux/leds.h>
 #include <linux/module.h>
 #include <linux/platform_data/leds-kirkwood-ns2.h>
+#include <linux/of.h>
 #include <linux/of_gpio.h>
 
 /*