nvmem: core: remove nvmem_config wp_gpio

No one provides wp_gpio, so let's remove it to avoid issues with
the nvmem core putting this gpio.

Cc: stable@vger.kernel.org
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20230127104015.23839-5-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: Russell King (Oracle)

drivers/nvmem/core.c

@@ -772,9 +772,7 @@ struct nvmem_device *nvmem_register(const struct nvmem_config *config)
 
 	nvmem->id = rval;
 
-	if (config->wp_gpio)
-		nvmem->wp_gpio = config->wp_gpio;
-	else if (!config->ignore_wp)
+	if (!config->ignore_wp)
 		nvmem->wp_gpio = gpiod_get_optional(config->dev, "wp",
 						    GPIOD_OUT_HIGH);
 	if (IS_ERR(nvmem->wp_gpio)) {

include/linux/nvmem-provider.h

@@ -70,7 +70,6 @@ struct nvmem_keepout {
  * @word_size:	Minimum read/write access granularity.
  * @stride:	Minimum read/write access stride.
  * @priv:	User context passed to read/write callbacks.
- * @wp-gpio:	Write protect pin
  * @ignore_wp:  Write Protect pin is managed by the provider.
  *
  * Note: A default "nvmem<id>" name will be assigned to the device if
@@ -85,7 +84,6 @@ struct nvmem_config {
 	const char		*name;
 	int			id;
 	struct module		*owner;
-	struct gpio_desc	*wp_gpio;
 	const struct nvmem_cell_info	*cells;
 	int			ncells;
 	const struct nvmem_keepout *keepout;