feat(non linear font scaling): support up to 200% font scaling.

Test: manual
Bug: b/237558231

Change-Id: Ie8d5495d467222ef5b612abdf8059a2afab2201f

res/values/arrays.xml

@@ -105,11 +105,16 @@
         <item>1800000</item>
     </string-array>
 
+    <!-- NOTE: if you change this, you must also add the corresponding scale key and lookup table to
+         frameworks/base/core/java/android/content/res/FontScaleLookupTableFactory.java -->
     <string-array name="entryvalues_font_size" translatable="false">
         <item>0.85</item>
         <item>1.0</item>
         <item>1.15</item>
         <item>1.30</item>
+        <item>1.50</item>
+        <item>1.80</item>
+        <item>2.0</item>
     </string-array>
 
     <!-- Wi-Fi settings -->