[PATCH -next] gpio: fix kernel-doc after devres.c file rename

[Randy Dunlap]

From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>

Fix gpio kernel-doc generation after rename of the devres.c file.
Fixes these errors & warning:

Error: Cannot open file ../drivers/gpio/devres.c
Error: Cannot open file ../drivers/gpio/devres.c
WARNING: kernel-doc '../scripts/kernel-doc -rst -enable-lineno -export ../drivers/gpio/devres.c' failed with return code 2

Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
Cc: linux-gpio@xxxxxxxxxxxxxxx
---
 Documentation/driver-api/gpio/index.rst |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-next-20181005.orig/Documentation/driver-api/gpio/index.rst
+++ linux-next-20181005/Documentation/driver-api/gpio/index.rst
@@ -38,7 +38,7 @@ Device tree support
 Device-managed API
 ==================
 
-.. kernel-doc:: drivers/gpio/devres.c
+.. kernel-doc:: drivers/gpio/gpiolib-devres.c
    :export:
 
 sysfs helpers