dt-bindings: firmware: convert Qualcomm SCM binding to the yaml

Convert Qualcomm SCM firmware binding to the yaml format.

This commit also:
 - adds qcom,scm-mdm9607 into list which has only core clock
 - adds qcom,scm-sm6125, qcom,scm-ipq6018
 - #reset-cells, because the property is already used

Signed-off-by: David Heidelberg <david@ixit.cz>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Guru Das Srinagesh <quic_gurus@quicinc.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220708090431.30437-1-david@ixit.cz