power: reset: reboot-mode: Add managed resource API

Provide managed resource version of reboot_mode_register() and
reboot_mode_unregister() to simplify implementations.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Tested-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
diff --git a/Documentation/driver-model/devres.txt b/Documentation/driver-model/devres.txt
index b0d775d..b1ff0b7 100644
--- a/Documentation/driver-model/devres.txt
+++ b/Documentation/driver-model/devres.txt
@@ -342,6 +342,10 @@
   devm_pinctrl_register()
   devm_pinctrl_unregister()
 
+POWER
+  devm_reboot_mode_register()
+  devm_reboot_mode_unregister()
+
 PWM
   devm_pwm_get()
   devm_pwm_put()