Add 'vendor.' prefix to a vendor HAL service name

To prevent property name collisions between properties of system and
vendor, 'vendor.' prefix must be added to a vendor HAL service name.
You can see the details in http://go/treble-sysprop-compatibility.

Test: succeeded building and tested on a sailfish device.
Bug: 36796459
Change-Id: I48e6ee0ae3fe401e39efb273256d991fac676357
Signed-off-by: Alberto97 <albertop2197@gmail.com>

rootdir/etc/init.qcom.ril.sh

@@ -4,5 +4,5 @@ export PATH=/system/xbin:$PATH
 multisim=`getprop persist.radio.multisim.config`
 
 if [ "$multisim" = "dsds" ] || [ "$multisim" = "dsda" ]; then
-    start ril-daemon2
+    start vendor.ril-daemon2
 fi