Migrate String8|16.setTo to assignment operator

Bug: 295394788
Test: make checkbuild
Change-Id: I370f66c469de73064dec2e42c539dc236dd69d1e
diff --git a/libs/hwui/RenderNode.h b/libs/hwui/RenderNode.h
index 7092e17..208dc3e 100644
--- a/libs/hwui/RenderNode.h
+++ b/libs/hwui/RenderNode.h
@@ -121,9 +121,9 @@
         if (name) {
             const char* lastPeriod = strrchr(name, '.');
             if (lastPeriod) {
-                mName.setTo(lastPeriod + 1);
+                mName = (lastPeriod + 1);
             } else {
-                mName.setTo(name);
+                mName = name;
             }
         }
     }