Handle both cases, obj being absolute and relative

gnu make's handling of filenames is less than optimal. It simply
compares strings, so foo/../bar is different from bar, even though
they're logically the same.

Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Acked-by: Patrick Georgi <patrick@georgi-clan.de>

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6605 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
diff --git a/Makefile.inc b/Makefile.inc
index 76bfc26..a488a77 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -179,7 +179,7 @@
 	@printf "    HOSTCC     $(subst $(objutil)/,,$(@))\n"
 	$(HOSTCC) -MMD -I$(subst $(objutil)/,util/,$(dir $<)) -I$(dir $<) $(HOSTCFLAGS) -c -o $@ $<
-$(abspath $(obj))/%.ramstage.o: $(obj)/%.c $(obj)/config.h $(OPTION_TABLE_H)
+$(obj)/%.ramstage.o $(abspath $(obj))/%.ramstage.o: $(obj)/%.c $(obj)/config.h $(OPTION_TABLE_H)
 	@printf "    CC         $(subst $(obj)/,,$(@))\n"
 	$(CC) -MMD $(CFLAGS) -c -o $@ $<