Prefix all build output file names of files which end up in the build

directory with "build/" for consistency (trivial, sort of).

Also, drop printing of "config.g" input file, we usually only print
generated/output files in the build output.

Finally, rename non-existing COMPRESSFLAG variable to
CBFS_PAYLOAD_COMPRESS_FLAG in a printf line. The build output now says

    PAYLOAD    payload.elf l

for payloads (the "l" specifies LZMA compression).

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4875 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

Makefile

@@ -311,7 +311,7 @@ $(obj)/ldoptions: $(obj)/config.h
 	awk '/^#define ([^"])* ([^"])*$$/ {print $$2 " = " $$3 ";";}' $< > $@
 
 $(obj)/romcc: $(top)/util/romcc/romcc.c
-	@printf "    HOSTCC     romcc (this may take a while)\n"
+	@printf "    HOSTCC     build/romcc (this may take a while)\n"
 	$(HOSTCC) -g -O2 -Wall -o $@ $<
 
 .PHONY: $(PHONY) prepare prepare2 clean distclean doxygen doxy coreboot