charging qc3+ wt6670 add wt6670 get firmware num node for factory test Change-Id: I28f737181e1f10a9140e78d2859ca3b9ffc47557 Signed-off-by: huaqin87 <huaqin87@motorola.com> Reviewed-on: https://gerrit.mot.com/2144714 SME-Granted: SME Approvals Granted SLTApproved: Slta Waiver Tested-by: Jira Key Reviewed-by: Huosheng Liao <liaohs@motorola.com> Reviewed-by: Wei Xu <xuwei9@lenovo.com> Reviewed-by: Xiangpo Zhao <zhaoxp3@motorola.com> Submit-Approved: Jira Key