ipmi: Add missing build dependency

Add a missing pyyaml dependency to the
phosphor-ipmi-sensor-inventory-mrw-native recipe.

Tested: Built a Witherspoon image
Change-Id: Ia85eb4da107f855d8f2dd9483b4dd34b71674f24
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-phosphor/common/recipes-phosphor/ipmi/phosphor-ipmi-sensor-inventory-mrw-native.bb b/meta-phosphor/common/recipes-phosphor/ipmi/phosphor-ipmi-sensor-inventory-mrw-native.bb
index 9c846a5..e58e02a 100644
--- a/meta-phosphor/common/recipes-phosphor/ipmi/phosphor-ipmi-sensor-inventory-mrw-native.bb
+++ b/meta-phosphor/common/recipes-phosphor/ipmi/phosphor-ipmi-sensor-inventory-mrw-native.bb
@@ -12,6 +12,7 @@
            mrw-perl-tools-native \
            phosphor-ipmi-sensor-config-native \
            phosphor-ipmi-sensor-inventory-mrw-config-native \
+           python-pyyaml-native \
            "
 
 PROVIDES += "virtual/phosphor-ipmi-sensor-inventory"