pinctrl: Add resource management devm_pinctrl_{register, unregister}

Add new member of devm wrappers for the pinctrl_register and
pinctrl_unregister in list of managed interfaces.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/Documentation/driver-model/devres.txt b/Documentation/driver-model/devres.txt
index 73b98df..e89f7b5 100644
--- a/Documentation/driver-model/devres.txt
+++ b/Documentation/driver-model/devres.txt
@@ -328,6 +328,8 @@
 PINCTRL
   devm_pinctrl_get()
   devm_pinctrl_put()
+  devm_pinctrl_register()
+  devm_pinctrl_unregister()
 
 PWM
   devm_pwm_get()