ARM: dts: stm32: Enable RNG for stm32mp157c-ed1

Enable stm32-hwrng for ed1 and ev1 boards
Signed-off-by: NLionel Debieve <lionel.debieve@st.com>
Signed-off-by: NAlexandre Torgue <alexandre.torgue@st.com>

arch/arm/boot/dts/stm32mp157c-ed1.dts

@@ -25,6 +25,10 @@
 	};
 };
 
+&rng1 {
+	status = "okay";
+};
+
 &timers6 {
 	status = "okay";
 	timer@5 {