set dev_sn for battery pairing

Bug: 238307181
Signed-off-by: Jenny Ho <hsiufangho@google.com>
Change-Id: I8b1c0de4b57e6475627e279bd890fe66ca8e92c5
diff --git a/conf/init.gs201.rc b/conf/init.gs201.rc
index 0f4869a..57631cc 100644
--- a/conf/init.gs201.rc
+++ b/conf/init.gs201.rc
@@ -827,6 +827,9 @@
     # Disable GPU firmware logging
     write /sys/devices/platform/28000000.mali/firmware_config/Log\ verbosity/cur 0
 
+    # write serialno to battery path for pairing
+    write /sys/class/power_supply/battery/dev_sn ${ro.boot.serialno}
+
 # IMS WiFi Calling
     service charonservice /system/vendor/bin/charon
     class main