iproute2: Mention the 'up' argument in documentation

Both ip-link and ip-address support the 'up' argument, however this
isn't documented in neither their help outputs or ip-address' manpage.
This patch fixes that.
Signed-off-by: Petr Šabata <contyk@redhat.com>
Reported-by: Jiří Popelka <jpopelka@redhat.com>

ip/ipaddress.c

@@ -71,7 +71,7 @@ static void usage(void)
 	fprintf(stderr, "                                                      [ CONFFLAG-LIST ]\n");
 	fprintf(stderr, "       ip addr del IFADDR dev STRING\n");
 	fprintf(stderr, "       ip addr {show|save|flush} [ dev STRING ] [ scope SCOPE-ID ]\n");
-	fprintf(stderr, "                            [ to PREFIX ] [ FLAG-LIST ] [ label PATTERN ]\n");
+	fprintf(stderr, "                            [ to PREFIX ] [ FLAG-LIST ] [ label PATTERN ] [up]\n");
 	fprintf(stderr, "       ip addr {showdump|restore}\n");
 	fprintf(stderr, "IFADDR := PREFIX | ADDR peer PREFIX\n");
 	fprintf(stderr, "          [ broadcast ADDR ] [ anycast ADDR ]\n");

ip/iplink.c

@@ -79,7 +79,7 @@ void iplink_usage(void)
 	fprintf(stderr, "				   [ spoofchk { on | off} ] ] \n");
 	fprintf(stderr, "			  [ master DEVICE ]\n");
 	fprintf(stderr, "			  [ nomaster ]\n");
-	fprintf(stderr, "       ip link show [ DEVICE | group GROUP ]\n");
+	fprintf(stderr, "       ip link show [ DEVICE | group GROUP ] [up]\n");
 
 	if (iplink_have_newlink()) {
 		fprintf(stderr, "\n");

man/man8/ip-address.8.in

@@ -162,6 +162,10 @@ only list addresses with labels matching the
 .I PATTERN
 is a usual shell style pattern.
 
+.TP
+.B up
+only list running interfaces.
+
 .TP
 .BR dynamic " and " permanent
 (IPv6 only) only list addresses installed due to stateless