ARM: dts: omap3-gta04: Enable mmc2 for wifi

This requires vaux4.

Reset line isn't used yet, so wifi isn't reliable.
But it does work once per boot.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Marek Belisko <marek@goldelico.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

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

@@ -176,7 +176,9 @@
 };
 
 &mmc2 {
-	status = "disabled";
+	vmmc-supply = <&vaux4>;
+	bus-width = <4>;
+	ti,non-removable;
 };
 
 &mmc3 {
@@ -202,3 +204,8 @@
 	bb_uvolt = <3200000>;
 	bb_uamp = <150>;
 };
+
+&vaux4 {
+	regulator-min-microvolt = <2800000>;
+	regulator-max-microvolt = <3150000>;
+};