Build fbset using a single process

package/fbset/fbset.mk

@@ -22,7 +22,7 @@ $(FBSET_DIR)/.unpacked: $(DL_DIR)/$(FBSET_SOURCE)
 	touch $@
 
 $(FBSET_DIR)/$(FBSET_BINARY): $(FBSET_DIR)/.unpacked
-	$(MAKE) $(TARGET_CONFIGURE_OPTS) -C $(FBSET_DIR)
+	$(MAKE1) $(TARGET_CONFIGURE_OPTS) -C $(FBSET_DIR)
 	touch -c $@
 
 $(TARGET_DIR)/$(FBSET_TARGET_BINARY): $(FBSET_DIR)/$(FBSET_BINARY)