stm32f4: timer: correct misleading comments.

Code was correct, comment was badly imported.

Author: karlp

examples/stm32/f4/stm32f4-discovery/timer/timer.c

@@ -61,10 +61,10 @@ static void clock_setup(void)
 
 static void gpio_setup(void)
 {
-	/* Enable GPIOC clock. */
+	/* Enable GPIO clock for leds. */
 	rcc_periph_clock_enable(RCC_GPIOD);
 
-	/* Set GPIO12 (in GPIO port C) to 'output push-pull'. */
+	/* Set GPIO12 (in GPIO port D) to 'output push-pull'. */
 	gpio_mode_setup(GPIOD, GPIO_MODE_OUTPUT,
 		      GPIO_PUPD_NONE, GPIO12 | GPIO13);