[PATCH] power: reset: nvmem-reboot-mode: add CONFIG_OF dependency

[Arnd Bergmann]

Without CONFIG_OF, we get a build failure in the reboot-mode
implementation:

drivers/power/reset/reboot-mode.c: In function 'reboot_mode_register':
drivers/power/reset/reboot-mode.c:72:2: error: implicit declaration of function 
'for_each_property_of_node'; did you mean 'for_each_child_of_node'? 
[-Werror=implicit-function-declaration]
  for_each_property_of_node(np, prop) {

Add a Kconfig dependency like we have for the other users of
CONFIG_REBOOT_MODE.

Fixes: 7a78a7f7695b ("power: reset: nvmem-reboot-mode: use NVMEM as reboot mode 
write interface")
Signed-off-by: Arnd Bergmann <a...@arndb.de>
---
 drivers/power/reset/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig
index 8dfb105db391..a564237278ff 100644
--- a/drivers/power/reset/Kconfig
+++ b/drivers/power/reset/Kconfig
@@ -248,6 +248,7 @@ config POWER_RESET_SC27XX
 
 config NVMEM_REBOOT_MODE
        tristate "Generic NVMEM reboot mode driver"
+       depends on OF
        select REBOOT_MODE
        help
          Say y here will enable reboot mode driver. This will
-- 
2.20.0