[VOL-5308] - bbsim test failure

Makefile
--------
  o Temporary flag USE_LF_MK=1 added to enable library repo:onf-make use.
  o Default behavior will use legacy makefiles from  repo:bbsim/makefiles/.
  o Fixed typo on line 76

lf/include.mk
makefiles/
-------------
  o Transition bridge for using repo:onf-make.
  o Define variable legacy-mk= as bbsim/makefiles/
  o Replace path variable $(MAKEDIR=) with $(legacy-mk).
  o Replace variable $(ONF_MAKEDIR=) with $(legacy-mk).
  o These edits help break dependency on non-library makefiles/ directory.
    allowing repo:onf-make to be used as a transparent replacement.

Change-Id: Ida8c020384cf78ddf19fa6375702429d992d10a1
Signed-off-by: Joey Armstrong <jarmstrong@linuxfoundation.org>
diff --git a/makefiles/commands/include.mk b/makefiles/commands/include.mk
index e2d3ccd..0a2d46d 100644
--- a/makefiles/commands/include.mk
+++ b/makefiles/commands/include.mk
@@ -25,7 +25,7 @@
 
 $(if $(DEBUG),$(warning ENTER))
 
-include $(ONF_MAKEDIR)/commands/kail.mk
+include $(legacy-mk)/commands/kail.mk
 
 $(if $(DEBUG),$(warning LEAVE))