mvebu: Replace the padjffs2 call by the generic definition

The mvebu image Makefile directly calls the padjffs2 utility, while there's an
generic make function to do just that. Switch to it

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

SVN-Revision: 43968

target/linux/mvebu/image/Makefile

@@ -44,7 +44,7 @@ define Image/BuildKernel
 endef
 
 define Image/Build/squashfs
-	$(STAGING_DIR_HOST)/bin/padjffs2 $(KDIR)/root.squashfs 128
+	$(call prepare_generic_squashfs,$(KDIR)/root.squashfs)
 	$(foreach nandboard,$(NANDBOARDS),$(call Image/Build/UbinizeImage,$(nandboard),,squashfs,$(UBI_OPTS));)
 	( \
 		dd if=$(KDIR)/uImage-armada-xp-mamba bs=3072k conv=sync; \