python-watchdog: add missing runtime dependency

Script watchmedo requires python-setuptools.

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 7a801da8eaa0f4c45d20519afd6d653c2ed76248)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/python-watchdog/Config.in

@@ -1,8 +1,9 @@
 config BR2_PACKAGE_PYTHON_WATCHDOG
 	bool "python-watchdog"
-	select BR2_PACKAGE_PYTHON_PYYAML
-	select BR2_PACKAGE_PYTHON_ARGH
-	select BR2_PACKAGE_PYTHON_PATHTOOLS
+	select BR2_PACKAGE_PYTHON_ARGH # runtime
+	select BR2_PACKAGE_PYTHON_PATHTOOLS # runtime
+	select BR2_PACKAGE_PYTHON_PYYAML # runtime
+	select BR2_PACKAGE_PYTHON_SETUPTOOLS # runtime
 	help
 	  Python API and shell utilities to monitor file system events.