iproute2: Fix -o (oneline) being broken in xfrm & correct mark radix

Don't insert newline in -o (oneline) mode; print mark as hex.

Oneline mode is supposed to force all output to be on oneline and machine-parsable, but this isn't the case for "ip xfrm" as shown:

% ip -o xfrm monitor
...
src 0.0.0.0/0 dst 0.0.0.0/0 \ dir out priority 2051 ptype main \ mark -1879048191/0xffffffff

    tmpl src 203.0.130.10 dst 198.51.130.30\        proto esp reqid 16384 mode tunnel\

...

as that's 2 lines, not one. Also, the "mark" is shown in signed decimal, but the mask is in hex. This is confusing: let's use hex for both.

---
 ip/ipxfrm.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

index 659fa6b6457996cfc2a1beca1b6a8db11492c6d2..95f91a537759f90a07832537c92969d46d8a2921 100644
@@ -689,7 +689,8 @@ void xfrm_xfrma_print(struct rtattr *tb[], __u16 family,
 	if (tb[XFRMA_MARK]) {
 		struct rtattr *rta = tb[XFRMA_MARK];
 		struct xfrm_mark *m = (struct xfrm_mark *) RTA_DATA(rta);
-		fprintf(fp, "\tmark %d/0x%x\n", m->v, m->m);
+		fprintf(fp, "\tmark %#x/%#x", m->v, m->m);
+		fprintf(fp, "%s", _SL_);
 	}
 
 	if (tb[XFRMA_ALG_AUTH] && !tb[XFRMA_ALG_AUTH_TRUNC]) {

Applied to master. Thanks