meta-phosphor: add missing RDEPENDS on pyphosphor pkgs

Change-Id: Iaebf6d1e076519ca8378bc3fe982f54b77a05092
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/common/recipes-phosphor/sensors/obmc-hwmon.bb b/common/recipes-phosphor/sensors/obmc-hwmon.bb
index 0e555b8..6a1c373 100644
--- a/common/recipes-phosphor/sensors/obmc-hwmon.bb
+++ b/common/recipes-phosphor/sensors/obmc-hwmon.bb
@@ -12,6 +12,7 @@
         python-json \
         python-shell \
         python-pygobject \
+        pyphosphor \
         pyphosphor-dbus \
         ${VIRTUAL-RUNTIME_skeleton_workbook} \
         "