reference the licenses.tmpl file like we do for other files inside modules

Signed-off-by: Tim Ramlot <42113979+inteon@users.noreply.github.com>

Author: inteon

modules/licenses/01_mod.mk

@@ -14,8 +14,7 @@
 
 ###################### Generate LICENSES files ######################
 
-# _top is the directory containing the top-level Makefile
-_top = $(abspath $(dir $(firstword $(MAKEFILE_LIST))))
+licenses_tmpl := $(dir $(lastword $(MAKEFILE_LIST)))/licenses.tmpl
 
 # Create a go.work file so that go-licenses can discover the LICENSE file of the
 # other modules in the repo.
@@ -33,11 +32,11 @@ generate-go-licenses: #
 shared_generate_targets += generate-go-licenses
 
 define licenses_target
-$1/LICENSES: $1/go.mod $(licenses_go_work) $(_top)/make/_shared/licenses/licenses.tmpl | $(NEEDS_GO-LICENSES)
+$1/LICENSES: $1/go.mod $(licenses_go_work) $(licenses_tmpl) | $(NEEDS_GO-LICENSES)
 	cd $$(dir $$@) && \
 		GOWORK=$(abspath $(licenses_go_work)) \
 		GOOS=linux GOARCH=amd64 \
-		$(GO-LICENSES) report --ignore "$$(license_ignore)" --template $(_top)/make/_shared/licenses/licenses.tmpl ./... > LICENSES
+		$(GO-LICENSES) report --ignore "$$(license_ignore)" --template $(abspath $(licenses_tmpl)) ./... > LICENSES
 
 generate-go-licenses: $1/LICENSES
 # The /LICENSE targets make sure these files exist.