ARM: dts: omap4-panda: Fix DVI EDID reads

On Panda the +5V supply for DVI EDID is supplied by the
same regulator that poweres the USB Hub. Currently, the
DSS/DVI subsystem doesn't know how to manage this regulator
and so DVI EDID reads will fail if USB Hub is not enabled.

As a temporary fix we keep this regulator permanently enabled
on boot. This fixes the DVI EDID read problem.

CC: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Benoit Cousson <benoit.cousson@linaro.org>

arch/arm/boot/dts/omap4-panda-common.dtsi

@@ -85,6 +85,13 @@ hsusb1_power: hsusb1_power_reg {
 		gpio = <&gpio1 1 0>;	/* gpio_1 */
 		startup-delay-us = <70000>;
 		enable-active-high;
+		/*
+		 * boot-on is required along with always-on as the
+		 * regulator framework doesn't enable the regulator
+		 * if boot-on is not there.
+		 */
+		regulator-always-on;
+		regulator-boot-on;
 	};
 
 	/* HS USB Host PHY on PORT 1 */