witherspoon-tacoma: disable host watchdog function

Hostboot utilizes inband IPMI on witherspoon-tacoma. They relied on OPAL
firmware to continue pinging the watchdog and eventually disabling it.
For the most part though, IBM utilizes PHYP on witherspoon-tacoma
machines and they do not have the needed in-band IPMI support to do
this.

IBM needs either both firmware stacks (hostboot and PHYP) to use PLDM
(i.e. p10bmc) or IPMI (witherspoon). Tacoma is an outlier so just
disable the host watchdog function on Tacoma.

Tested:
- Verified a witherspoon-tacoma with PHYP booted successfully

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Change-Id: Ibceb2ad6933973b97e122b83c89f6be7e7b8f868
diff --git a/meta-ibm/recipes-phosphor/ipmi/phosphor-ipmi-host_%.bbappend b/meta-ibm/recipes-phosphor/ipmi/phosphor-ipmi-host_%.bbappend
index 38fbd71..45678d9 100644
--- a/meta-ibm/recipes-phosphor/ipmi/phosphor-ipmi-host_%.bbappend
+++ b/meta-ibm/recipes-phosphor/ipmi/phosphor-ipmi-host_%.bbappend
@@ -1,6 +1,9 @@
 DEPENDS:append:ibm-ac-server = " acx22-yaml-config"
 DEPENDS:append:mihawk = " acx22-yaml-config"
 
+# host watchdog does not work with witherspoon-tacoma host firmware
+RDEPENDS:${PN}:remove:witherspoon-tacoma = "virtual/obmc-watchdog"
+
 EXTRA_OECONF:ibm-ac-server = " \
     SENSOR_YAML_GEN=${STAGING_DIR_HOST}${datadir}/acx22-yaml-config/ipmi-sensors.yaml \
     INVSENSOR_YAML_GEN=${STAGING_DIR_HOST}${datadir}/acx22-yaml-config/ipmi-inventory-sensors.yaml \
@@ -10,4 +13,4 @@
     SENSOR_YAML_GEN=${STAGING_DIR_HOST}${datadir}/acx22-yaml-config/ipmi-sensors.yaml \
     INVSENSOR_YAML_GEN=${STAGING_DIR_HOST}${datadir}/acx22-yaml-config/ipmi-inventory-sensors.yaml \
     FRU_YAML_GEN=${STAGING_DIR_HOST}${datadir}/acx22-yaml-config/ipmi-fru-read.yaml \
-    "
\ No newline at end of file
+    "