nl802154: add missing attribute validation for dev_type

BugLink: https://bugs.launchpad.net/bugs/1868629

[ Upstream commit b60673c4 ]

Add missing attribute type validation for IEEE802154_ATTR_DEV_TYPE
to the netlink policy.

Fixes: 90c049b2 ("ieee802154: interface type to be added")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>
Signed-off-by: Kelsey Skunberg <kelsey.skunberg@canonical.com>

net/ieee802154/nl_policy.c

@@ -36,6 +36,7 @@ const struct nla_policy ieee802154_policy[IEEE802154_ATTR_MAX + 1] = {
 	[IEEE802154_ATTR_BAT_EXT] = { .type = NLA_U8, },
 	[IEEE802154_ATTR_COORD_REALIGN] = { .type = NLA_U8, },
 	[IEEE802154_ATTR_PAGE] = { .type = NLA_U8, },
+	[IEEE802154_ATTR_DEV_TYPE] = { .type = NLA_U8, },
 	[IEEE802154_ATTR_COORD_SHORT_ADDR] = { .type = NLA_U16, },
 	[IEEE802154_ATTR_COORD_HW_ADDR] = { .type = NLA_HW_ADDR, },
 	[IEEE802154_ATTR_COORD_PAN_ID] = { .type = NLA_U16, },