sm8450-common: Set radio build profile to u-stable

As seen on unicorn V816.0.3.0.ULECNXM

Change-Id: I86d4dfb5e384f986799257e1c670988823712775

properties/vendor.prop

@@ -191,6 +191,7 @@ persist.vendor.radio.enableadvancedscan=true
 persist.vendor.radio.procedure_bytes=SKIP
 persist.vendor.radio.sib16_support=1
 ro.telephony.default_network=33,33
+ro.vendor.radio.build_profile=u-stable
 
 # RCS
 persist.vendor.rcs.singlereg.feature=1