[SCSI] fcoe, libfc: add libfcoe module

Just sets up build environment for libfcoe module towards a
libfcoe library for libfc LLDs using FCoE as libfc transport.

Common library code to libfcoe is added in next patch.

Also, updated MODULE_LICENSE from "GPL" string to "GPL v2" for
libfc, libfcoe and fcoe modules to accurately match the licenses.

Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/scsi/fcoe/Makefile b/drivers/scsi/fcoe/Makefile
index 9b590ef..950f276 100644
--- a/drivers/scsi/fcoe/Makefile
+++ b/drivers/scsi/fcoe/Makefile
@@ -1 +1,2 @@
 obj-$(CONFIG_FCOE) += fcoe.o
+obj-$(CONFIG_LIBFCOE) += libfcoe.o