sdm660-common: Rename atfwd service and property

- all vendor init services should be prefixed
with vendor
- radio.atfwd.start -> vendor.radio.atfwd.start
persist.radio.atfwd.start -> persist.vendor.radio.atfwd.start
This property is now qualified as a platform property and is not
whitelisted. Therefore it must be renamed to continue to be
used as a trigger.

Change-Id: Iebb0eed75f7ac6f71085ac12cf2a3e7414defb09
CRs-Fixed: 2223094

rootdir/etc/init.qcom.rc

@@ -686,6 +686,9 @@ service vendor.atfwd /vendor/bin/ATFWD-daemon
     user system
     group system radio
 
+on property:persist.vendor.radio.atfwd.start=true
+    start vendor.atfwd
+
 service hostapd_fst /vendor/bin/hw/hostapd -dd -g /data/vendor/wifi/hostapd/global
     interface android.hardware.wifi.hostapd@1.0::IHostapd default
     class main