firmware-utils/trx: fix two bugs

- fix crc32 calculation if -F was enabled.

 - don't convert the crc32 to little endian twice.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>

SVN-Revision: 38962

tools/firmware-utils/src/trx.c

@@ -273,11 +273,10 @@ int main(int argc, char **argv)
 	}
 
 	p->crc32 = crc32buf((char *) &p->flag_version,
-						(fsmark)?fsmark:cur_len - offsetof(struct trx_header, flag_version));
+						((fsmark)?fsmark:cur_len) - offsetof(struct trx_header, flag_version));
 	p->crc32 = STORE32_LE(p->crc32);
 
 	p->len = STORE32_LE((fsmark) ? fsmark : cur_len);
-	p->len = STORE32_LE(p->len);
 
 	/* restore TRXv2 bin-header */
 	if (trx_version == 2) {