gpio: fix constconst in devres

Commit 1feb57a245a4910b03202a814ffc51a900bd4aca
"gpio: add parameter to allow the use named gpios"
includes a double-consted array. What we want is not
const const * but const * const (const pointer to const
data). Fix this.

Reported-by: Dan Carpenter <[e-mail]>
Cc: Olliver Schinagl <[e-mail]>
Cc: Rojhalat Ibrahim <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>

drivers/gpio/devres.c

···
 					    const char *con_id,
 					    struct fwnode_handle *child)
 {
-	static const char const *suffixes[] = { "gpios", "gpio" };
+	static const char * const suffixes[] = { "gpios", "gpio" };
 	char prop_name[32]; /* 32 is max size of property name */
 	struct gpio_desc **dr;
 	struct gpio_desc *desc;