filelist/modules: print a message when including modules from deviceinfo

fixes https://gitlab.com/postmarketOS/postmarketos-mkinitfs/-/issues/24

internal/filelist/modules/modules.go

@@ -53,6 +53,8 @@ func (m *Modules) List() (*filelist.FileList, error) {
 	}
 
 	// slurp up given list of modules
+	if len(m.modulesList) > 0 {
+		log.Printf("-- Including kernel modules from deviceinfo")
 		for _, module := range m.modulesList {
 			if modFilelist, err := getModule(module, modDir); err != nil {
 				return nil, fmt.Errorf("unable to get modules from deviceinfo: %w", err)
@@ -62,6 +64,7 @@ func (m *Modules) List() (*filelist.FileList, error) {
 				}
 			}
 		}
+	}
 
 	// slurp up modules from lists in modulesListPath
 	log.Printf("- Searching for kernel modules from %s", m.modulesListPath)