cbfstool: Fix compile warnings caused by incorrect data types.

The "offset" in cbfs-mkpayload should be printed as type %lu
instead of %d as `gcc` rightfully warns about.

    gcc -g -Wall -D_7ZIP_ST -c -o /srv/filme/src/coreboot/util/cbfstool/cbfs-mkpayload.o cbfs-mkpayload.c
    cbfs-mkpayload.c: In function ‘parse_fv_to_payload’:
    cbfs-mkpayload.c:284:3: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long unsigned int’ [-Wformat]
    cbfs-mkpayload.c:296:3: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long unsigned int’ [-Wformat]

This warning was introduced in the following commit.

    commit 4610247ef1744ccabbcc6bfc441a3583aa49f7b5
    Author: Patrick Georgi <patrick@georgi-clan.de>
    Date:   Sat Feb 9 13:26:19 2013 +0100

        cbfstool: Handle alignment in UEFI payloads

        Reviewed-on: http://review.coreboot.org/2334

Change-Id: I50c26a314723d45fcc6ff9ae2f08266cb7969a12
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: http://review.coreboot.org/2440
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
diff --git a/util/cbfstool/cbfs-mkpayload.c b/util/cbfstool/cbfs-mkpayload.c
index 6115e49..9f3dabf 100644
--- a/util/cbfstool/cbfs-mkpayload.c
+++ b/util/cbfstool/cbfs-mkpayload.c
@@ -281,7 +281,7 @@
 	fh = (ffs_file_header_t *)(input->data + fv->header_length);
 	while (fh->file_type == FILETYPE_PAD) {
 		unsigned long offset = (fh->size[2] << 16) | (fh->size[1] << 8) | fh->size[0];
-		ERROR("skipping %d bytes of FV padding\n", offset);
+		ERROR("skipping %lu bytes of FV padding\n", offset);
 		fh = (ffs_file_header_t *)(((void*)fh) + offset);
 	}
 	if (fh->file_type != FILETYPE_SEC) {
@@ -293,7 +293,7 @@
 	cs = (common_section_header_t *)&fh[1];
 	while (cs->section_type == SECTION_RAW) {
 		unsigned long offset = (cs->size[2] << 16) | (cs->size[1] << 8) | cs->size[0];
-		ERROR("skipping %d bytes of section padding\n", offset);
+		ERROR("skipping %lu bytes of section padding\n", offset);
 		cs = (common_section_header_t *)(((void*)cs) + offset);
 	}
 	if (cs->section_type != SECTION_PE32) {