ARM: dts: OMAP3: disable RNG on N950/N9

Like on N900, we cannot access RNG directly on N950/N9. Mark it disabled in
the DTS to allow kernel to boot.

Fixes: 308607e5 ("ARM: dts: Configure omap3 rng")
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/omap3-n950-n9.dtsi

@@ -341,6 +341,11 @@ &mmc3 {
 	status = "disabled";
 };
 
+/* RNG not directly accessible on N950/N9. */
+&rng_target {
+	status = "disabled";
+};
+
 &usb_otg_hs {
 	interface-type = <0>;
 	usb-phy = <&usb2_phy>;