uwb: add WiMedia LLC Protocol (build system)

Add the WLP build system (Kconfig and Kbuild files).

Signed-off-by: David Vrabel <david.vrabel@csr.com>
diff --git a/drivers/uwb/Kconfig b/drivers/uwb/Kconfig
index a442f39..41f8984 100644
--- a/drivers/uwb/Kconfig
+++ b/drivers/uwb/Kconfig
@@ -57,4 +57,11 @@
           To compile this driver select Y (built in) or M (module). It
           is safe to select any even if you do not have the hardware.
 
+config UWB_WLP
+	tristate "Support WiMedia Link Protocol (Ethernet/IP over UWB)"
+	depends on UWB && NET
+	help
+	  This is a common library for drivers that implement
+	  networking over UWB.
+
 endif # UWB