ARM: dts: omap3-gta04: add warning comment to vaux2 regulator

vaux2 should remain always on since a higher potential at vio
could potentially damage the itg3200 sensor.
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/omap3-gta04.dtsi

@@ -553,7 +553,7 @@ &vaux1 {
 &vaux2 {
 	regulator-min-microvolt = <2800000>;
 	regulator-max-microvolt = <2800000>;
-	regulator-always-on;
+	regulator-always-on;	/* we should never switch off while vio is on! */
 };
 
 /* camera */