lynx: Enable fast scan

Enable fast scan and set the channel cache number for each network to 3

Bug: 317012368
Test: Manual
Change-Id: If1cd8b750713e9e094543e587c86e83e1fa4eec0

rro_overlays/WifiOverlay/res/values/config.xml

@@ -151,4 +151,10 @@
          regulatory approval (for example, FCC pre-approval is required according to "594280 D01
          Software Configuration Control v02r01").-->
     <bool translatable="false" name ="config_wifiUpdateCountryCodeFromScanResultGeneric">true</bool>
+
+    <!-- Boolean indicating performing a partial initial scan is enabled -->
+    <bool translatable="false" name="config_wifiEnablePartialInitialScan">true</bool>
+    <!-- Configure the max number of new channels to add into the initial partial scan list per network.
+         If equals to 0, it means there's no limit on the max number of channels to include per network.-->
+    <integer translatable="false" name="config_wifiInitialPartialScanMaxNewChannelsPerNetwork">3</integer>
 </resources>