a71-common: audio-impl: Migrate String8|16.setTo to assignment operator

Bug: 295394788
Test: make checkbuild
Change-Id: I4df5d3fe54912abbf42f92f809ab5602c0d8caef

audio/impl/ParametersUtil.cpp

@@ -97,7 +97,7 @@ std::unique_ptr<AudioParameter> ParametersUtil::getParams(const AudioParameter&
     String8 paramsAndValues;
     char* halValues = halGetParameters(keys.keysToString().c_str());
     if (halValues != NULL) {
-        paramsAndValues.setTo(halValues);
+        paramsAndValues = halValues;
         free(halValues);
     } else {
         paramsAndValues.clear();