[ARM] 4851/1: ns9xxx: fix size of gpiores

GPIO_MAX is the number of the last gpio, not the number of gpios.  So
the bitmap must provide GPIO_MAX + 1 bits.
Signed-off-by: NUwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-ns9xxx/gpio.c

@@ -31,7 +31,7 @@
 static spinlock_t gpio_lock = __SPIN_LOCK_UNLOCKED(gpio_lock);
 
 /* only access gpiores with atomic ops */
-static DECLARE_BITMAP(gpiores, GPIO_MAX);
+static DECLARE_BITMAP(gpiores, GPIO_MAX + 1);
 
 static inline int ns9xxx_valid_gpio(unsigned gpio)
 {