board: ge: bx50v3: Fix run-time warning

Fix GPIO reservation warning on code paths that do not need LVDS power.
Signed-off-by: NIan Ray <ian.ray@ge.com>
Signed-off-by: NRobert Beckett <bob.beckett@collabora.com>

board/ge/bx50v3/bx50v3.c

@@ -714,8 +714,10 @@ int ft_board_setup(void *blob, bd_t *bd)
 static int do_backlight_enable(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 #ifdef CONFIG_VIDEO_IPUV3
+	if (!is_b850v3()) {
 		/* We need at least 200ms between power on and backlight on
-	 * as per specifications from CHI MEI */
+		 * as per specifications from CHI MEI
+		 */
 		mdelay(250);
 
 		/* enable backlight PWM 1 */
@@ -728,6 +730,7 @@ static int do_backlight_enable(cmd_tbl_t *cmdtp, int flag, int argc, char * cons
 		gpio_direction_output(LVDS_BACKLIGHT_GP, 1);
 
 		pwm_enable(0);
+	}
 #endif
 
 	return 0;