Enable Witherspoon AVS bus and VRM control

Change-Id: I3739068a89645628d007e5fe1d530f51bbe1c3d6
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/meta-openbmc-machines/meta-openpower/meta-ibm/meta-witherspoon/recipes-phosphor/host/p9-host-start.bbappend b/meta-openbmc-machines/meta-openpower/meta-ibm/meta-witherspoon/recipes-phosphor/host/p9-host-start.bbappend
new file mode 100644
index 0000000..ac2013f
--- /dev/null
+++ b/meta-openbmc-machines/meta-openpower/meta-ibm/meta-witherspoon/recipes-phosphor/host/p9-host-start.bbappend
@@ -0,0 +1,2 @@
+RDEPENDS_${PN} += 'avsbus-control'
+RDEPENDS_${PN} += 'vrm-control'