ata: pxa: Drop <linux/gpio.h> include

This driver does not use GPIO or anything from the GPIO header.
Drop the include.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

drivers/ata/pata_pxa.c

@@ -25,7 +25,6 @@
 #include <linux/libata.h>
 #include <linux/platform_device.h>
 #include <linux/dmaengine.h>
-#include <linux/gpio.h>
 #include <linux/slab.h>
 #include <linux/completion.h>