gpio: cadence: Remove duplicated include in gpio-cadence.c

The header files linux/gpio/driver.h is included twice in gpio-cadence.c,
so one inclusion of each can be removed.

Reported-by: Abaci Robot <[e-mail]>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=22931
Signed-off-by: Yang Li <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Bartosz Golaszewski <[e-mail]>

drivers/gpio/gpio-cadence.c

···
 #include <linux/clk.h>
 #include <linux/gpio/driver.h>
 #include <linux/interrupt.h>
-#include <linux/gpio/driver.h>
 #include <linux/gpio/generic.h>
 #include <linux/kernel.h>
 #include <linux/module.h>