pwm: imx27: Remove unused include of of_device.h

There is nothing in use from of_device.h, remove it.

Signed-off-by: Anson Huang <[email protected]>
Acked-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

Author: Anson-Huang

drivers/pwm/pwm-imx27.c

@@ -18,7 +18,6 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/pwm.h>
 #include <linux/slab.h>