It looks like there is a copy mistake for the QCM6490-idp, the emmc partitions.conf contains ufs config: https://github.com/qualcomm-linux/qcom-ptool/blob/6540ea3824aee6ffc8cac5670d87652cb21f046f/platforms/qcm6490-idp/emmc/partitions.conf#L7
It looks like there is a copy mistake for the QCM6490-idp, the emmc partitions.conf contains ufs config:
qcom-ptool/platforms/qcm6490-idp/emmc/partitions.conf
Line 7 in 6540ea3