gpio: rcar: Fix typo in comment

"Positive" is spelled incorrectly as "Postive" in
comment fix this.
Signed-off-by: Ashish Chavan <ashish.gschavan@gmail.com>
Link: https://lore.kernel.org/r/20200209095600.16394-1-ashish.gschavan@gmail.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-rcar.c

@@ -116,7 +116,7 @@ static void gpio_rcar_config_interrupt_input_mode(struct gpio_rcar_priv *p,
 
 	spin_lock_irqsave(&p->lock, flags);
 
-	/* Configure postive or negative logic in POSNEG */
+	/* Configure positive or negative logic in POSNEG */
 	gpio_rcar_modify_bit(p, POSNEG, hwirq, !active_high_rising_edge);
 
 	/* Configure edge or level trigger in EDGLEVEL */
@@ -228,7 +228,7 @@ static void gpio_rcar_config_general_input_output_mode(struct gpio_chip *chip,
 
 	spin_lock_irqsave(&p->lock, flags);
 
-	/* Configure postive logic in POSNEG */
+	/* Configure positive logic in POSNEG */
 	gpio_rcar_modify_bit(p, POSNEG, gpio, false);
 
 	/* Select "General Input/Output Mode" in IOINTSEL */