compatible with 3 and 2 channels support 4 channels only in borneo the sar chip default support 3 or 2 channels Change-Id: I0a594fe18ebff2679b0ada26646f44b50afce67f Signed-off-by: chenlj2 <chenlj2@motorola.com> Reviewed-on: https://gerrit.mot.com/1640530 SLTApproved: Slta Waiver SME-Granted: SME Approvals Granted Tested-by: Jira Key Reviewed-by: Wen Xie <xiewen3@motorola.com> Reviewed-by: Tao Sun <suntao2@motorola.com> Submit-Approved: Jira Key Reviewed-by: Jiacheng Ou <oujc1@motorola.com>