compute rootfs crc32 required for brcm63xx web upgrades

SVN-Revision: 15081

tools/firmware-utils/src/imagetag.c

@@ -191,10 +191,7 @@ int tagfile(const char *kernel, const char *rootfs, const char *bin,
 	fseek(binfile, rootfsoff - fwaddr, SEEK_SET);
 	while (rootfsfile && !feof(rootfsfile) && !ferror(rootfsfile)) {
 		read = fread(readbuf, sizeof(uint8_t), sizeof(readbuf), rootfsfile);
-		/*
+		crc = crc32(crc, readbuf, read);
-		 * TODO: Is this necessary ?
-		 * crc = crc32(crc, readbuf, read);
-		 */
 		fwrite(readbuf, sizeof(uint8_t), read, binfile);
 	}