ieee802154: cc2520: add driver to kernel build system

Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ieee802154/Kconfig

@@ -51,3 +51,14 @@ config IEEE802154_MRF24J40
 
 	  This driver can also be built as a module. To do so, say M here.
 	  the module will be called 'mrf24j40'.
+
+config IEEE802154_CC2520
+	depends on IEEE802154_DRIVERS && MAC802154
+	tristate "CC2520 transceiver driver"
+	depends on SPI
+	---help---
+	  Say Y here to enable the CC2520 SPI 802.15.4 wireless
+	  controller.
+
+	  This driver can also be built as a module. To do so, say M here.
+	  the module will be called 'cc2520'.

drivers/net/ieee802154/Makefile

@@ -2,3 +2,4 @@ obj-$(CONFIG_IEEE802154_FAKEHARD) += fakehard.o
 obj-$(CONFIG_IEEE802154_FAKELB) += fakelb.o
 obj-$(CONFIG_IEEE802154_AT86RF230) += at86rf230.o
 obj-$(CONFIG_IEEE802154_MRF24J40) += mrf24j40.o
+obj-$(CONFIG_IEEE802154_CC2520) += cc2520.o