[PATCH] nios2: add FORCE for vmlinuz.gz

[Randy Dunlap]

Add FORCE to placate a warning from make:

arch/nios2/boot/Makefile:24: FORCE prerequisite is missing

Fixes: 2fc8483fdcde ("nios2: Build infrastructure")
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Dinh Nguyen <dinguyen@xxxxxxxxxx>
Cc: Masahiro Yamada <masahiroy@xxxxxxxxxx>
Cc: linux-kbuild@xxxxxxxxxxxxxxx
---
 arch/nios2/boot/Makefile |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -- a/arch/nios2/boot/Makefile b/arch/nios2/boot/Makefile
--- a/arch/nios2/boot/Makefile
+++ b/arch/nios2/boot/Makefile
@@ -20,7 +20,7 @@ $(obj)/vmlinux.bin: vmlinux FORCE
 $(obj)/vmlinux.gz: $(obj)/vmlinux.bin FORCE
 	$(call if_changed,gzip)
 
-$(obj)/vmImage: $(obj)/vmlinux.gz
+$(obj)/vmImage: $(obj)/vmlinux.gz FORCE
 	$(call if_changed,uimage)
 	@$(kecho) 'Kernel: $@ is ready'