sm7250-common: props: Enable Seamless Transfer

It allows users to switch between audio output devices by tapping the music
note icon on the notification of a music app

Change-Id: I71cdc10d21c53345666d372f71ade982c4a37277

vendor.prop

@@ -220,6 +220,9 @@ persist.vendor.radio.sib16_support=1
 persist.vendor.radio.uicc_se_enabled=true
 ro.com.android.dataroaming=false
 
+# Seamless transfer
+sys.fflag.override.settings_seamless_transfer=true
+
 # Sensors
 persist.vendor.sensors.enable.mag_filter=true
 persist.vendor.sensors.debug.ssc_qmi_debug=true