We will integrate MBOX compatible Prince DSP Protection FW to v5.03.06 in same JIRA to address the issue correctly, therefore we need MBOX controls. (This reverts commit 87587195db832a6a1156e0c613fdd4a2718fad39.) MOT-CR-Fixed: (CR) Change-Id: I231464519a347126d965d1b844e76a97fa197480 Signed-off-by: Yoon (Seungyoon) Lee <w22905@motorola.com> Reviewed-on: https://gerrit.mot.com/1241770 SLTApproved: Slta Waiver SME-Granted: SME Approvals Granted Tested-by: Jira Key Reviewed-by: Master Yoda Reviewed-by: Guobin Zhang <zhanggb@motorola.com> Reviewed-by: Yunfeng Pan <panyf1@motorola.com> Reviewed-by: Yuesheng Huang <huangys@motorola.com> Submit-Approved: Jira Key