Update qcom,spmi-vadc bindings to include "qcom,scale-fn-type"
property for ADC7.
Change-Id: Ieb8ad5779b078dd77838c498b3a4e0bbcf907df8
Signed-off-by: Jishnu Prakash <quic_jprakash@quicinc.com>
[quic_amelende@quicinc.com: Converted binding change from .txt to .yaml
and removed changes already captured in yaml]
Signed-off-by: Anjelique Melendez <quic_amelende@quicinc.com>