TBR discovery mojo: Add dirparam to MOJO_GEN

MultiPart: 2/3

Change-Id: Ia7c3c442c7de1d66c7becec811a2d8d33f0e4302
diff --git a/Makefile b/Makefile
index c54ae5c..c5e7152 100644
--- a/Makefile
+++ b/Makefile
@@ -24,7 +24,7 @@
 
 
 go/src/mojom/vanadium/discovery/discovery.mojom.go: mojom/vanadium/discovery.mojom | mojo-env-check
-	$(call MOJOM_GEN,$<,.,go)
+	$(call MOJOM_GEN,$<,.,.,go)
 	gofmt -w $@
 
 
@@ -47,4 +47,4 @@
 
 run-scanner: $(DISCOVERY_BUILD_DIR)/scanner.mojo $(DISCOVERY_BUILD_DIR)/discovery.mojo
 	sudo $(MOJO_DIR)/src/mojo/devtools/common/mojo_run --config-file $(PWD)/mojoconfig $(MOJO_SHELL_FLAGS) $(MOJO_ANDROID_FLAGS) https://mojo.v.io/scanner.mojo \
-	--args-for="https://mojo.v.io/discovery.mojo host2 ble mdns"
\ No newline at end of file
+	--args-for="https://mojo.v.io/discovery.mojo host2 ble mdns"