Add recipes for Witherspoon VCS workaround

Create vcs-workaround machine feature p9.inc
Add new recipe vcs-pre-post.bb
Add new recipe p9-vcs-workaround.bb
Add new recipe start_host.bb
Create preferred providers
Create host control machine/distro/image feature
Add dependencies

Partially resolves openbmc/openbmc#647

Change-Id: I285cafc81afda20977fdf360ad8ad34d15e38685
Signed-off-by: Sergey Solomin <sergey.solomin@us.ibm.com>
diff --git a/meta-phosphor/classes/obmc-phosphor-image.bbclass b/meta-phosphor/classes/obmc-phosphor-image.bbclass
index 813b20d..31f99cf 100644
--- a/meta-phosphor/classes/obmc-phosphor-image.bbclass
+++ b/meta-phosphor/classes/obmc-phosphor-image.bbclass
@@ -27,6 +27,7 @@
 FEATURE_PACKAGES_obmc-system-mgmt ?= "${@df_enabled('obmc-phosphor-system-mgmt', 'virtual-obmc-system-mgmt', d)}"
 FEATURE_PACKAGES_obmc-host-ipmi ?= "${@cf_enabled('obmc-host-ipmi', 'virtual-obmc-host-ipmi-hw', d)}"
 FEATURE_PACKAGES_obmc-logging-mgmt ?= "${@cf_enabled('obmc-logging-mgmt', 'virtual-obmc-logging-mgmt', d)}"
+FEATURE_PACKAGES_obmc-host-ctl ?= "${@cf_enabled('obmc-host-ctl', 'virtual-obmc-host-ctl', d)}"
 
 # Install entire Phosphor application stack by default
 IMAGE_FEATURES += " \
@@ -40,6 +41,7 @@
         obmc-system-mgmt \
         obmc-host-ipmi \
         obmc-logging-mgmt \
+        obmc-host-ctl \
         ssh-server-dropbear \
         "