sm7250-common: Set vendor props for RF and PRJ version

These props are used by cnss-daemon in order to load
proper bdwlan firmware. Apparently these should be
set automatically via some QMI/RIL binary but I don't
really care enough to figure out as to how that works.

Change-Id: I06effa06321e9e00994ce7918c14bbc929d3d1cd

rootdir/etc/init.oem.rc

@@ -308,6 +308,8 @@ on boot
 on init
     setprop vendor.boot.verifiedbootstate ${ro.boot.verifiedbootstate}
     setprop vendor.boot.hw_version ${ro.boot.hw_version}
+    setprop vendor.boot.prj_version ${ro.boot.prj_version}
+    setprop vendor.rf.version ${ro.boot.rf_version}
 
     #@bsp, 2019/08/22 Add dash charging
     chown system system /dev/dash