ARM: imx: novena: Enable DM GPIO

Enable DM GPIO support on iMX6Q Novena and fix up board code
where applicable.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Vagrant Cascadian <vagrant@debian.org>
diff --git a/board/kosagi/novena/video.c b/board/kosagi/novena/video.c
index f1351b9..7083b6e 100644
--- a/board/kosagi/novena/video.c
+++ b/board/kosagi/novena/video.c
@@ -270,6 +270,7 @@
 		return;
 
 	/* ITE IT6251 power enable. */
+	gpio_request(NOVENA_ITE6251_PWR_GPIO, "ite6251-power");
 	gpio_direction_output(NOVENA_ITE6251_PWR_GPIO, 0);
 	mdelay(10);
 	gpio_direction_output(NOVENA_ITE6251_PWR_GPIO, 1);
@@ -447,6 +448,8 @@
 	/* Init the LVDS-to-eDP chip and if it succeeded, enable backlight. */
 	ret = it6251_init();
 	if (!ret) {
+		gpio_request(NOVENA_BACKLIGHT_PWR_GPIO, "backlight-power");
+		gpio_request(NOVENA_BACKLIGHT_PWM_GPIO, "backlight-pwm");
 		/* Backlight power enable. */
 		gpio_direction_output(NOVENA_BACKLIGHT_PWR_GPIO, 1);
 		/* PWM backlight pin, always on for full brightness. */