arm64: dts: qcom: sm6350: Add missing qcom,non-secure-domain property

arm64: dts: qcom: sm6350: Add missing qcom,non-secure-domain property

By default the DSP domains are secure, add the missing
qcom,non-secure-domain property to mark them as non-secure.

Fixes: efc33c969f23 ("arm64: dts: qcom: sm6350: Add ADSP nodes")
Fixes: 8eb5287e8a42 ("arm64: dts: qcom: sm6350: Add CDSP nodes")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Link: https://lore.kernel.org/r/20240705-sm6350-fastrpc-fix-v2-1-89a43166c9bb@fairphone.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>