Add wdat_wdt to watchdog driver list (#240)

jsc#DOCTEAM-684
bsc#1201687

xml/ha_storage_protection.xml

@@ -394,7 +394,8 @@ stonith-timeout = Timeout (msgwait) + 20%</screen>
     are already loaded before the right one gets a chance.</para>
     <para>
      <xref linkend="tab-ha-storage-protect-watchdog-drivers" xrefstyle="select:label"/>
-     lists the most commonly used watchdog drivers. If your hardware is not listed here, the directories
+     lists some commonly used watchdog drivers. However, this is not a complete list
+     of supported drivers. If your hardware is not listed here, the directories
      <filename>/lib/modules/<replaceable>KERNEL_VERSION</replaceable>/kernel/drivers/watchdog</filename>
      and
      <filename>/lib/modules/<replaceable>KERNEL_VERSION</replaceable>/kernel/drivers/ipmi</filename>
@@ -424,13 +425,17 @@ stonith-timeout = Timeout (msgwait) + 20%</screen>
        <entry><systemitem class="resource">ipmi_watchdog</systemitem></entry>
       </row>
       <row>
-       <entry>VMs on IBM z/VM</entry>
+       <entry>VM on IBM z/VM</entry>
        <entry><systemitem class="resource">vmwatchdog</systemitem></entry>
       </row>
       <row>
-       <entry>Xen VMs (DomU)</entry>
+       <entry>Xen VM (DomU)</entry>
        <entry><systemitem class="resource">xen_xdt</systemitem></entry>
       </row>
+      <row>
+       <entry>VM on VMware vSphere</entry>
+       <entry><systemitem class="resource">wdat_wdt</systemitem></entry>
+      </row>
       <row>
        <entry>Generic</entry>
        <entry><systemitem class="resource">softdog</systemitem></entry>