Makefile.inc: Remove explicit ramstage dependency for coreboot.rom

This is already handled in $(prebuild-files).

Change-Id: I648f97198772d30d6d267ab9d6f7fa8d1d5d0e91
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56111
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
diff --git a/Makefile.inc b/Makefile.inc
index eb505e5..96374a9 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -1146,7 +1146,7 @@
 	$(1): $(obj)/coreboot.pre $(2) | $(INTERMEDIATE) \
 	$(eval INTERMEDIATE+=$(1)) $(eval PHONY+=$(1))
 
-$(obj)/coreboot.rom: $(obj)/coreboot.pre $(RAMSTAGE) $(CBFSTOOL) $$(INTERMEDIATE)
+$(obj)/coreboot.rom: $(obj)/coreboot.pre $(CBFSTOOL) $$(INTERMEDIATE)
 	@printf "    CBFS       $(subst $(obj)/,,$(@))\n"
 # The full ROM may be larger than the CBFS part, so create an empty
 # file (filled with \377 = 0xff) and copy the CBFS image over it.