ieee802154: add simple HardMAC driver sample

fakehard is a really simple driver implementing only necessary
callbacks and serves the role of an example of driver for HardMAC
IEEE 802.15.4 device.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Sergey Lapin <slapin@ossfans.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/ieee802154/Kconfig b/drivers/ieee802154/Kconfig
new file mode 100644
index 0000000..25740bd
--- /dev/null
+++ b/drivers/ieee802154/Kconfig
@@ -0,0 +1,22 @@
+menuconfig IEEE802154_DRIVERS
+	bool "IEEE 802.15.4 drivers"
+	depends on NETDEVICES && IEEE802154
+	default y
+	---help---
+	  Say Y here to get to see options for IEEE 802.15.4 Low-Rate
+	  Wireless Personal Area Network device drivers. This option alone
+	  does not add any kernel code.
+
+	  If you say N, all options in this submenu will be skipped and
+	  disabled.
+
+config IEEE802154_FAKEHARD
+	tristate "Fake LR-WPAN driver with several interconnected devices"
+	depends on  IEEE802154_DRIVERS
+	---help---
+	  Say Y here to enable the fake driver that serves as an example
+          of HardMAC device driver.
+
+          This driver can also be built as a module. To do so say M here.
+	  The module will be called 'fakehard'.
+