WifiCoex: Add default channel 11 for band 40

Use default wifi channel 11 if interference from band 40
renders all 2.4GHz wifi channels unsafe for coex.

Bug: 198345384
Test: adb shell cmd wifi set-coex-cell-channels lte 40 2400000 200000 -1
0, verify that coex log does not contain unsafe channel 11

Change-Id: Ifd90ed1846bc9897a88244b5fdc964143c00d702
diff --git a/wifi/coex_table.xml b/wifi/coex_table.xml
index ec61422..ff31bed 100644
--- a/wifi/coex_table.xml
+++ b/wifi/coex_table.xml
@@ -305,6 +305,9 @@
         <wifiVictimMhz>50</wifiVictimMhz>
         <cellVictimMhz>50</cellVictimMhz>
       </neighborThresholds>
+      <defaultChannels>
+        <default2g>11</default2g>
+      </defaultChannels>
     </params>
   </entry>
 
@@ -316,6 +319,9 @@
         <wifiVictimMhz>50</wifiVictimMhz>
         <cellVictimMhz>50</cellVictimMhz>
       </neighborThresholds>
+      <defaultChannels>
+        <default2g>11</default2g>
+      </defaultChannels>
     </params>
   </entry>