Install service unit files, busconfig and udev rules from the package.

This change required as a part of privilege separation work:
  https://github.com/openbmc/openbmc/issues/3383

The dependant change in openbmc repo:
  https://gerrit.openbmc-project.xyz/c/openbmc/openbmc/+/40359

Signed-off-by: Anton D. Kachalov <gmouse@google.com>
Change-Id: I89aec71b446e0b7be40a10e1cd94ea16d891a277
diff --git a/phosphor-hwmon.conf b/phosphor-hwmon.conf
new file mode 100644
index 0000000..b92c412
--- /dev/null
+++ b/phosphor-hwmon.conf
@@ -0,0 +1,7 @@
+<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
+ "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
+<busconfig>
+  <policy user="root">
+    <allow own_prefix="xyz.openbmc_project.Hwmon"/>
+  </policy>
+</busconfig>