kbuild: remove a tab from an empty line

Emacs warns if an otherwise empty line starts with a tab.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>

Makefile

@@ -1116,7 +1116,7 @@ modules: $(module-dirs)
 
 .PHONY: modules_install
 modules_install: _emodinst_ _emodinst_post
-	
+
 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)	
 .PHONY: _emodinst_
 _emodinst_: