Bluetooth: mgmt: Fix timeout type

Silence sparse warnings:
net/bluetooth/mgmt.c:865:19: warning: cast to restricted __le16
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: NMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: NGustavo Padovan <gustavo@padovan.org>

include/net/bluetooth/mgmt.h

@@ -117,7 +117,7 @@ struct mgmt_mode {
 #define MGMT_OP_SET_DISCOVERABLE	0x0006
 struct mgmt_cp_set_discoverable {
 	__u8	val;
-	__u16	timeout;
+	__le16	timeout;
 } __packed;
 #define MGMT_SET_DISCOVERABLE_SIZE	3