feat: differentiate machine-id generation in x86 target

Makefile

@@ -30,6 +30,7 @@ EMISSARY_SERVER_URL ?=
 
 BASE_INSTALL ?= install-emissary-files
 ADDITIONAL_INSTALL ?=
+ADDITIONAL_OPENWRT_PACKAGES ?=
 
 include targets/*.mk
 include install/*.mk
@@ -51,7 +52,7 @@ build: $(IMAGEBUILDER_DIR_PATH) $(IMAGEBUILDER_CUSTOM_PACKAGES_DIR_PATH) $(IMAGE
 		-C "$(IMAGEBUILDER_DIR_PATH)" \
 		EXTRA_IMAGE_NAME="$(EXTRA_IMAGE_NAME)" \
 		PROFILE="$(OPENWRT_PROFILE)" \
-		PACKAGES="$(OPENWRT_PACKAGES)" \
+		PACKAGES="$(OPENWRT_PACKAGES) $(ADDITIONAL_OPENWRT_PACKAGES)" \
 		CONFIG_IPV6=n \
 		FILES="$(IMAGEBUILDER_CUSTOM_FILES_DIR_PATH)" \
 		BIN_DIR="$(BIN_DIR)" \