[fpv] Add lint checking to FPV tb

This PR adds lint checking for FPV testbench.

Signed-off-by: Cindy Chen <chencindy@google.com>
diff --git a/util/fpvgen/fusesoc.core.tpl b/util/fpvgen/fusesoc.core.tpl
index 5f64dda..10afa50 100644
--- a/util/fpvgen/fusesoc.core.tpl
+++ b/util/fpvgen/fusesoc.core.tpl
@@ -44,3 +44,6 @@
 
   formal:
     <<: *default_target
+
+  lint:
+    <<: *default_target