ieee802154: add LIST_PHY command support

Add nl802154 command to get information about PHY's present in
the system.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
diff --git a/net/ieee802154/nl_policy.c b/net/ieee802154/nl_policy.c
index 2363ebe..6adda4d 100644
--- a/net/ieee802154/nl_policy.c
+++ b/net/ieee802154/nl_policy.c
@@ -27,6 +27,7 @@
 const struct nla_policy ieee802154_policy[IEEE802154_ATTR_MAX + 1] = {
 	[IEEE802154_ATTR_DEV_NAME] = { .type = NLA_STRING, },
 	[IEEE802154_ATTR_DEV_INDEX] = { .type = NLA_U32, },
+	[IEEE802154_ATTR_PHY_NAME] = { .type = NLA_STRING, },
 
 	[IEEE802154_ATTR_STATUS] = { .type = NLA_U8, },
 	[IEEE802154_ATTR_SHORT_ADDR] = { .type = NLA_U16, },
@@ -50,5 +51,6 @@
 	[IEEE802154_ATTR_CHANNELS] = { .type = NLA_U32, },
 	[IEEE802154_ATTR_DURATION] = { .type = NLA_U8, },
 	[IEEE802154_ATTR_ED_LIST] = { .len = 27 },
+	[IEEE802154_ATTR_CHANNEL_PAGE_LIST] = { .len = 32 * 4, },
 };