arm/dts: borneo: enable aw882xx volume fade

PROPAGATED_from (CR)

- Add a new property to control aw882xx volume fade,
enable it for avoiding spekeaker pop noise.

Change-Id: Ic62d89080dd9f04febb09605b5f82157aacd6e03
Signed-off-by: zhouwl <zhouwl@lenovo.com>
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Zhengming Yao <yaozm1@lenovo.com>
Reviewed-by: Hujun Liao <liaohj@motorola.com>
Submit-Approved: Jira Key
Signed-off-by: Robert Cabral <robertc@motorola.com>
Reviewed-on: https://gerrit.mot.com/1859240
Reviewed-by: Wanlong Zhou <zhouwl@motorola.com>

qcom/bengal-borneo-audio-overlay.dtsi

@@ -96,6 +96,7 @@
 		reset-gpio = <&tlmm 106 0>;
 		irq-gpio = <&tlmm 107 0x2008>;
 		monitor-flag = <1>;
+		fade-flag = <1>;
 		monitor-timer-val = <3000>;
 
 		afe-rx-portid = <0x1000>;