Issue #2386: adds two new tiles to the sports channel

We believe that these were fixed by the other changes in #2386.  Images will be added in a follow up commit.

app/src/main/java/org/mozilla/tv/firefox/channels/content/SportsChannels.kt

@@ -24,5 +24,21 @@ fun ChannelContent.getSportsChannels(): List<ChannelTile> = listOf(
         setImage = setImage(R.drawable.tile_sports_formula_1),
         tileSource = TileSource.SPORTS,
         id = "formula1"
+    ),
+    ChannelTile(
+        url = "https://www.cbssports.com/videos/",
+        title = "CBS Sports",
+        subtitle = null,
+        setImage = setImage(R.drawable.cursor_active_bg), // TODO add real image
+        tileSource = TileSource.SPORTS,
+        id = "cbsSports"
+    ),
+    ChannelTile(
+        url = "https://www.sbnation.com/videos",
+        title = "SB Nation",
+        subtitle = null,
+        setImage = setImage(R.drawable.cursor_active_bg), // TODO add real image
+        tileSource = TileSource.SPORTS,
+        id = "sbNation"
     )
 )