pinctrl: at91: fix clk_unprepare and clk_disable order

clk_unprepare shall be called before clk_disable.
Fix the issue by replacing the clk_unprepare and clk_disable calls by a
single clk_disable_unprepare call.
Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-at91.c

@@ -1365,14 +1365,12 @@ void at91_pinctrl_gpio_suspend(void)
 		__raw_writel(backups[i], pio + PIO_IDR);
 		__raw_writel(wakeups[i], pio + PIO_IER);
 
-		if (!wakeups[i]) {
-			clk_unprepare(gpio_chips[i]->clock);
-			clk_disable(gpio_chips[i]->clock);
-		} else {
+		if (!wakeups[i])
+			clk_disable_unprepare(gpio_chips[i]->clock);
+		else
 			printk(KERN_DEBUG "GPIO-%c may wake for %08x\n",
 			       'A'+i, wakeups[i]);
 	}
-	}
 }
 
 void at91_pinctrl_gpio_resume(void)