[PATCH] x86: do not recompile boot for each build

Keep the arch/i386/boot directory from being rebuilt every time.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
diff --git a/arch/i386/boot/Makefile b/arch/i386/boot/Makefile
index 08678a0a..93386a4 100644
--- a/arch/i386/boot/Makefile
+++ b/arch/i386/boot/Makefile
@@ -39,7 +39,7 @@
 setup-y		+= video-vga.o
 setup-y		+= video-vesa.o
 setup-y		+= video-bios.o
-
+targets		+= $(setup-y)
 hostprogs-y	:= tools/build
 
 HOSTCFLAGS_build.o := $(LINUXINCLUDE)