NETROM: Print decoded addresses rather than hex numbers.

NETROM is an OSI layer 3 protocol sitting on top of AX.25.  It also uses
AX.25 addresses.  Without this commit ip will print NETROM address like

  link/generic 98:92:9c:aa:b0:40:02 brd 00:00:00:00:00:00:00

while with this commit the decoded result

  link/generic LINUX-1 brd *

is much more eye friendly.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David Ahern <dsahern@kernel.org>
diff --git a/lib/ll_addr.c b/lib/ll_addr.c
index 910e6da..46e30c7 100644
--- a/lib/ll_addr.c
+++ b/lib/ll_addr.c
@@ -41,6 +41,8 @@
 		return inet_ntop(AF_INET6, addr, buf, blen);
 	if (alen == 7 && type == ARPHRD_AX25)
 		return ax25_ntop(AF_AX25, addr, buf, blen);
+	if (alen == 7 && type == ARPHRD_NETROM)
+		return netrom_ntop(AF_NETROM, addr, buf, blen);
 
 	snprintf(buf, blen, "%02x", addr[0]);
 	for (i = 1, l = 2; i < alen && l < blen; i++, l += 3)