platform/chrome: cros_ec_dev - Populate compat_ioctl

compat_ioctl has to be populated for 32 bit userspace applications to work
with 64 bit kernels.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
diff --git a/drivers/platform/chrome/cros_ec_dev.c b/drivers/platform/chrome/cros_ec_dev.c
index 187470c..6d8ee3b 100644
--- a/drivers/platform/chrome/cros_ec_dev.c
+++ b/drivers/platform/chrome/cros_ec_dev.c
@@ -212,6 +212,9 @@
 	.release = ec_device_release,
 	.read = ec_device_read,
 	.unlocked_ioctl = ec_device_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl = ec_device_ioctl,
+#endif
 };
 
 static void __remove(struct device *dev)