i2400m: Makefile and Kconfig

Integrate the i2400m driver into the kernel's build and Kconfig.

Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index e5c34b4..a3c5c00 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -263,3 +263,4 @@
 obj-$(CONFIG_VIRTIO_NET) += virtio_net.o
 obj-$(CONFIG_SFC) += sfc/
 
+obj-$(CONFIG_WIMAX) += wimax/