pinctrl: ab8500: Staticize some symbols

These symbols are used only in this file. Silences the following
warnings:
drivers/pinctrl/pinctrl-ab8500.c:392:28: warning:
symbol 'ab8500_alternate_functions' was not declared. Should it be static?
drivers/pinctrl/pinctrl-ab8500.c:458:32: warning:
symbol 'ab8500_gpio_irq_cluster' was not declared. Should it be static?

Signed-off-by: Sachin Kamat <[e-mail]>
Acked-by: Patrice Chotard <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>

drivers/pinctrl/pinctrl-ab8500.c

···
  *	alt_A	|       1       |          0          |          0
  */
 
-struct alternate_functions ab8500_alternate_functions[AB8500_GPIO_MAX_NUMBER + 1] = {
+static struct
+alternate_functions ab8500_alternate_functions[AB8500_GPIO_MAX_NUMBER + 1] = {
 	ALTERNATE_FUNCTIONS(0, UNUSED, UNUSED, UNUSED, 0, 0, 0), /* no GPIO0 */
 	ALTERNATE_FUNCTIONS(1,	    0, UNUSED, UNUSED, 0, 0, 0), /* GPIO1, altA controlled by bit 0 */
 	ALTERNATE_FUNCTIONS(2,      1, UNUSED, UNUSED, 0, 0, 0), /* GPIO2, altA controlled by bit 1 */
···
  *	GPIO24 and GPIO25
  *	GPIO36 to GPIO41
  */
-struct abx500_gpio_irq_cluster ab8500_gpio_irq_cluster[] = {
+static struct abx500_gpio_irq_cluster ab8500_gpio_irq_cluster[] = {
 	GPIO_IRQ_CLUSTER(6,  13, AB8500_INT_GPIO6R),
 	GPIO_IRQ_CLUSTER(24, 25, AB8500_INT_GPIO24R),
 	GPIO_IRQ_CLUSTER(36, 41, AB8500_INT_GPIO36R),