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.com


Signed-off-by: Bjorn Andersson <andersson@kernel.org>