package/python-xmodem: add host variant

The host variant of python-xmodem will be needed by Snagboot, so this
commit enables it. We also add a very simple test case that simply
makes sure we can import the module. Testing xmodem more extensively
is difficult without an actual serial port to open.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>

DEVELOPERS

@@ -3292,6 +3292,7 @@ F:	support/testing/tests/package/test_python_git.py
 F:	support/testing/tests/package/test_python_pyusb.py
 F:	support/testing/tests/package/test_python_serial.py
 F:	support/testing/tests/package/test_python_unittest_xml_reporting.py
+F:	support/testing/tests/package/test_python_xmodem.py
 F:	support/testing/tests/toolchain/test_external_arm.py
 F:	toolchain/
 

package/python-xmodem/python-xmodem.mk

@@ -12,3 +12,4 @@ PYTHON_XMODEM_LICENSE = MIT
 PYTHON_XMODEM_LICENSE_FILES = LICENSE
 
 $(eval $(python-package))
+$(eval $(host-python-package))

support/testing/tests/package/test_python_xmodem.py

@@ -0,0 +1,9 @@
+import infra.basetest
+
+
+class TestHostPythonXmodem(infra.basetest.BRHostPkgTest):
+    hostpkgs = ["host-python-xmodem"]
+
+    def test_run(self):
+        cmd = ["host/bin/python3", "-c", "import xmodem"]
+        infra.run_cmd_on_host(self.builddir, cmd)