python-serial: add license information

Signed-off-by: Ryan Barnett <rjbarnet@rockwellcollins.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/python-serial/python-serial.mk

@@ -7,6 +7,8 @@
 PYTHON_SERIAL_VERSION = 2.6
 PYTHON_SERIAL_SOURCE  = pyserial-$(PYTHON_SERIAL_VERSION).tar.gz
 PYTHON_SERIAL_SITE    = http://pypi.python.org/packages/source/p/pyserial
+PYTHON_SERIAL_LICENSE = Python Software Foundation License
+PYTHON_SERIAL_LICENSE_FILES = LICENSE.txt
 PYTHON_SERIAL_SETUP_TYPE = distutils
 
 $(eval $(python-package))