openpower-occ-control: Fix missing depends

The repo runs python to generate code or validate config, which requires
python and the dependent python packages. Previously that happens to be
satisfied by sdbusplus's RDEPENDS. If sdbusplus is changed to use
python3, this repo fails to built because it lacks the dependency.

See details in
https://lists.ozlabs.org/pipermail/openbmc/2020-February/020771.html

This commit fixes the depends by adding the required python and python
packages so that it builds fine.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Change-Id: I2d6d52aadc83b9e360f74724552a8f33df64bc13
diff --git a/recipes-phosphor/occ/openpower-occ-control_git.bb b/recipes-phosphor/occ/openpower-occ-control_git.bb
index cc0b56c..b76894d 100644
--- a/recipes-phosphor/occ/openpower-occ-control_git.bb
+++ b/recipes-phosphor/occ/openpower-occ-control_git.bb
@@ -31,6 +31,10 @@
         phosphor-dbus-interfaces \
         autoconf-archive-native \
         systemd \
+        ${PYTHON_PN}-native \
+        ${PYTHON_PN}-pyyaml-native \
+        ${PYTHON_PN}-setuptools-native \
+        ${PYTHON_PN}-mako-native \
         "
 
 RDEPENDS_${PN} += "phosphor-state-manager-obmc-targets"