include LGPL projects in GPL archives

LGPL projects need their source code distributed under very
similar conditions to GPL and MPL, the only difference is the
conditions under which they may be linked. It makes sense to
include them in the GPL archive tarballs.

Change-Id: I2c2df03906bfeee55566102aa688e4cdc283700b
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
diff --git a/core/base_rules.mk b/core/base_rules.mk
index 43f351a..673fdd8 100644
--- a/core/base_rules.mk
+++ b/core/base_rules.mk
@@ -84,11 +84,10 @@
 # Add implicit tags.
 #
 # If the local directory or one of its parents contains a MODULE_LICENSE_GPL
-# file, tag the module as "gnu".  Search for "*_GPL*" and "*_MPL*" so that we can also
-# find files like MODULE_LICENSE_GPL_AND_AFL but exclude files like
-# MODULE_LICENSE_LGPL.
+# file, tag the module as "gnu".  Search for "*_GPL*", "*_LGPL*" and "*_MPL*"
+# so that we can also find files like MODULE_LICENSE_GPL_AND_AFL
 #
-gpl_license_file := $(call find-parent-file,$(LOCAL_PATH),MODULE_LICENSE*_GPL* MODULE_LICENSE*_MPL*)
+gpl_license_file := $(call find-parent-file,$(LOCAL_PATH),MODULE_LICENSE*_GPL* MODULE_LICENSE*_MPL* MODULE_LICENSE*_LGPL*)
 ifneq ($(gpl_license_file),)
   my_module_tags += gnu
   ALL_GPL_MODULE_LICENSE_FILES := $(sort $(ALL_GPL_MODULE_LICENSE_FILES) $(gpl_license_file))