Add WPANUSB driver

From
https://github.com/statropy/wpanusb

drivers/net/ieee802154/Kconfig

@@ -73,6 +73,15 @@ config IEEE802154_ATUSB
 	  This driver can also be built as a module. To do so say M here.
 	  The module will be called 'atusb'.
 
+config IEEE802154_WPANUSB
+	tristate "WPANUSB driver"
+	depends on IEEE802154_DRIVERS && MAC802154 && USB
+	help
+	  Adds support for WPANUSB 802.15.4 adapters.
+
+	  This driver should work with at least the following devices:
+	  * BeagleBoard.org BeagleConnect Freedom
+
 config IEEE802154_ADF7242
 	tristate "ADF7242 transceiver driver"
 	depends on IEEE802154_DRIVERS && MAC802154

drivers/net/ieee802154/Makefile

@@ -4,6 +4,7 @@ obj-$(CONFIG_IEEE802154_AT86RF230) += at86rf230.o
 obj-$(CONFIG_IEEE802154_MRF24J40) += mrf24j40.o
 obj-$(CONFIG_IEEE802154_CC2520) += cc2520.o
 obj-$(CONFIG_IEEE802154_ATUSB) += atusb.o
+obj-$(CONFIG_IEEE802154_WPANUSB) += wpanusb.o
 obj-$(CONFIG_IEEE802154_ADF7242) += adf7242.o
 obj-$(CONFIG_IEEE802154_CA8210) += ca8210.o
 obj-$(CONFIG_IEEE802154_MCR20A) += mcr20a.o