cbfstool: Add -v (verbose) output.

Add -v (verbose) to every command, and allow printing debug messages.

Revise logging and debugging functions (fprintf(stderr,...), dprintf...)
and verbose message printing with following macros:
	ERROR(xxx):	E: xxx
	WARN(xxx)	W: xxx
	LOG(xxx)	xxx
	INFO(...)	INFO: xxx  (only when runs with -v )
	DEBUG(...)	DEBUG: xxx (only when runs with more than one -v)

Example:
	cbfstool coreboot.rom print -v
	cbfstool coreboot.rom add -f file -n file -t raw -v -v

Normal output (especially for parsing) should use printf, not any of these
macros (see usage() and cbfs_locate(), cbfs_print_directory() for example).

Change-Id: I167617da1a6eea2b07075b0eb38e3c9d85ea75dc
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: http://review.coreboot.org/2196
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
diff --git a/util/cbfstool/cbfs-mkpayload.c b/util/cbfstool/cbfs-mkpayload.c
index 7f01024..da04a75 100644
--- a/util/cbfstool/cbfs-mkpayload.c
+++ b/util/cbfstool/cbfs-mkpayload.c
@@ -44,13 +44,13 @@
 	int i;
 
 	if(!iself(input)){
-		fprintf(stderr, "E: The payload file is not in ELF format!\n");
+		ERROR("The payload file is not in ELF format!\n");
 		return -1;
 	}
 
 	if (!((ehdr->e_machine == EM_ARM) && (arch == CBFS_ARCHITECTURE_ARMV7)) &&
 	    !((ehdr->e_machine == EM_386) && (arch == CBFS_ARCHITECTURE_X86))) {
-		fprintf(stderr, "E: The payload file has the wrong architecture\n");
+		ERROR("The payload file has the wrong architecture\n");
 		return -1;
 	}