[PATCH] pwm: add missing kernel-doc for pwm_chip:cdev

[Randy Dunlap]

Add a kernel-doc description of @cdev to prevent a build warning:

include/linux/pwm.h:308: warning: Function parameter or struct member 'cdev' not described in 'pwm_chip'

Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
---
Cc: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
Cc: linux-pwm@xxxxxxxxxxxxxxx

 include/linux/pwm.h |    1 +
 1 file changed, 1 insertion(+)

diff -- a/include/linux/pwm.h b/include/linux/pwm.h
--- a/include/linux/pwm.h
+++ b/include/linux/pwm.h
@@ -268,6 +268,7 @@ struct pwm_ops {
 /**
  * struct pwm_chip - abstract a PWM controller
  * @dev: device providing the PWMs
+ * @cdev: &struct cdev for this device
  * @ops: callbacks for this PWM controller
  * @owner: module providing this chip
  * @id: unique number of this PWM chip