arm64: dts: qcom: sm8250: Add support for PRNG EE

RNG (Random Number Generator) in SM8250 features PRNG EE (Execution
Environment), hence add devicetree support for it.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20200921065806.10928-1-manivannan.sadhasivam@linaro.orgSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

arch/arm64/boot/dts/qcom/sm8250.dtsi

@@ -429,6 +429,13 @@ ipcc: mailbox@408000 {
 			#mbox-cells = <2>;
 		};
 
+		rng: rng@793000 {
+			compatible = "qcom,prng-ee";
+			reg = <0 0x00793000 0 0x1000>;
+			clocks = <&gcc GCC_PRNG_AHB_CLK>;
+			clock-names = "core";
+		};
+
 		qup_opp_table: qup-opp-table {
 			compatible = "operating-points-v2";