grub: adjust splashimage in menu.lst depending on configuration

Make the splashimage line in menu.lst only active when splashimage
support has really been enabled in the Grub configuration.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

boot/grub/grub.mk

@@ -66,6 +66,7 @@ GRUB_CONF_OPT = \
 ifeq ($(BR2_TARGET_GRUB_SPLASH),y)
 define GRUB_INSTALL_SPLASH
 	cp boot/grub/splash.xpm.gz $(TARGET_DIR)/boot/grub/
+	$(SED) 's/^#splashimage/splashimage/' $(TARGET_DIR)/boot/grub/menu.lst
 endef
 endif
 

boot/grub/menu.lst

@@ -1,6 +1,6 @@
 default=0
 timeout=5
-splashimage=(hd0,0)/boot/grub/splash.xpm.gz
+#splashimage=(hd0,0)/boot/grub/splash.xpm.gz
 hiddenmenu
 title Buildroot
 	root (hd0,0)