ARM: dts: rockchip: set PWM delay backlight settings for Minnie

The minnie devices comes with an AUO B101EAN01 panel which is different
from default veyron devices, thus the power on/off timing sequence is
slightly different. The datasheet specifies a pwm delay of 200 ms, so
update the PMW delay proprieties accordingly.
Signed-off-by: NEnric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: NPavel Machek <pavel@ucw.cz>
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rk3288-veyron-minnie.dts

@@ -123,6 +123,8 @@
 			240 241 242 243 244 245 246 247
 			248 249 250 251 252 253 254 255>;
 	power-supply = <&backlight_regulator>;
+	post-pwm-on-delay-ms = <200>;
+	pwm-off-delay-ms = <200>;
 };
 
 &emmc {