arm64: dts: qcom: sm8650: Enable download mode register write

Enable download mode setting for sm8650 which can help collect
ramdump for this SoC.
Signed-off-by: Mukesh Ojha <quic_mojha@quicinc.com>
Reviewed-by: Elliot Berman <quic_eberman@quicinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/1715888133-2810-1-git-send-email-quic_mojha@quicinc.comSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/sm8650.dtsi

@@ -366,6 +366,7 @@ CLUSTER_SLEEP_1: cluster-sleep-1 {
 	firmware {
 		scm: scm {
 			compatible = "qcom,scm-sm8650", "qcom,scm";
+			qcom,dload-mode = <&tcsr 0x19000>;
 			interconnects = <&aggre2_noc MASTER_CRYPTO QCOM_ICC_TAG_ALWAYS
 					 &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>;
 		};